The San Francisco 49ers have waived Jarryd Hayne in order to promote Kendall Gaskins to their 53-man roster.

Carlos Hyde has been ruled out with a stress fracture in his left foot.

Reggie Bush, rookie Mike Davis and Gaskins are the only healthy running backs who remain with the 49ers. 

San Francisco hopes Hayne clears waivers and they can re-sign him to their practice squad on Monday.

Vernon Davis called out Colin Kaepernick after the San Francisco 49ers' Oct. 4 loss to the Green Bay Packers in the locker room.

Joe Staley jumped to Kaepernick's defense and the exchange became heated and may have become physical.

Davis, Staley and Kaepernick cleared the air a few days later.

“I have a great relationship with Vernon,” Kaepernick said. “We’ve constantly had talks since I started playing. It’s something we both want to do. We both want to win. That’s where some of the frustrations come from. We’re trying to fix the losing streak we’d been on.”

Colin Kaepernick was described as being on "an island" in the San Francisco 49ers' locker room in a Fox Sports report over the weekend, after ESPN's Adam Schefter reported the usually solitary Kaepernick had stopped wearing his ever-present headphones in the lunchroom and started engaging with teammates.

Kaepernick was asked if he believes someone in the organization is leaking reports about him to make him the scapegoat for their struggles.

"I really hope not," he said Wednesday. "For me, I give everything I can to this organization. I give everything I can to my teammates to try to help us win, to try to help us be better moving forward."

Jim Tomsula disputed the characterization, as did a few teammates.

"First of all," said receiver Torrey Smith, "our locker room is straight. We need each other, now more than ever ... Kap isn't on a damn island."

Kaepernick was asked if the national reports were weighing on him.

"No, reports don't bother me," he said. "My relationship with my teammates is great. That's all I'm worried about. What the perspective is outside the locker room really has nothing to do with me or this team.

"I have a great relationship with my teammates. To me, that's the situation that I don't know what the agenda is saying that [I'm on an island], or what the credibility of that source is. I have a great relationship with my teammates and I'll leave it at that."

Jim Tomsula doesn't believe the sources of negative stories about the San Francisco 49ers are coming from inside the team.

“Look, if they’re not in the room when we close the door with 53 [players] and the coaching staff, they really don’t have our best interest at hand,” Tomsula said Wednesday morning. “If you’re not in here with us, if you’re not in the building with us, if you’re not working here with the 49ers, anything outside of that doesn’t have the same interest ... that we do.

“We’re intimate with what we’ve got to do if you’re employed by the San Francisco 49ers.”

Kaepernick has received criticism for being ostracized from the team.

“I’ve been here the whole time he’s been here and it seems like this has been what’s gone on with him since I’ve been here,” Tomsula said of Kaepernick. “It’s always, there’s always something. So I guess that’s what goes on when you’re the quarterback of the San Francisco 49ers.

“I was here with Alex [Smith] and I saw the same thing going on there; there were all kind of reports and you heard about that stuff all the time.”

Leaks last year created a narrative to undermine Jim Harbaugh.

“That would be an absolute concern, but I don’t address those things [because] I don’t know where they come from,” Tomsula said. “There’s stuff that comes all over the place that I don’t know where people are getting their stuff. I don’t believe it’s coming from here. I don’t believe that … from the locker room.”

The San Francisco 49ers fell to 2-5 with their 20-3 loss to the Seattle Seahawks.

Jim Tomsula is in his first season as head coach and has already drawn criticism, while Colin Kaepernick has been inconsistent. 

“I’ve heard whispers behind the scenes that something big could happen,” Matt Maiocco of CSNBayArea.com said after Thursday’s game. “I don’t know what it’s going to be. I don’t know what they’re talking about. But clearly the 49ers can’t go on this way. The coaching staff looks overmatched, the players look overmatched. The 49ers were plain and simple overmatched today against a team that came in with four losses. . . . There are a lot of very upset people in the 49ers organization.”

Colin Kaepernick's college coach, Chris Ault, believes his throwing motion is off.

“Nobody knows Kaep like I do, and really that started last year,” Ault said. “For some reason last year his technique throwing the ball . . . he let it go.”

Ault noted that Kaepernick’s arm strength allows him to get away with not always having flawless mechanics, but for the sake of accuracy it’s something he needs to improve.

“I saw a little of it in college,” Ault said. “He was a pitcher, as everyone knows. He threw that thing 93 or 94 miles per hour. He has a low elbow at times. It’s not a sidearm throw by any means, but his elbow and arm are at 90 degrees instead of having that thing extended all the way up. He does that because he’s so doggone strong. He’s one of the few guys that can get away throwing that way, but when you have to make the touch pass, drop it over [coverage], or if you have to anticipate where a receiver is going, that type of release oftentimes makes you very inconsistent. That’s what I’m seeing. I saw it when we were at Nevada a little bit.”

Colin Kaepernick has struggled during the first four weeks of the season after spending the offseason working with Kurt Warner.

“I think the unfortunate thing for Kap is he’s continuing to try to learn how to play the quarterback position,” Warner, an NFL Network analyst, said Monday on NFL Total Access.

“Here’s an athlete that’s done some great things, not only before this but also in the NFL up to this point. But he’s still learning how to play within the pocket, still learning to get better with his technique, still trying to figure out what he’s seeing and making quicker decisions with the football.

“I know everybody wants to get down on him but give the kid a chance to grow into the position. I have no idea what his future is going to be but it’s a young man that’s never really had to play the position like they’re asking him to play it now and he’s trying to learn and he’s learning under the gun.”

When asked if Kaepernick is regressing, Warner spoke about what has been asked of him since his arrival in the NFL as a second-round pick in 2011.

“Early in his career he ran a lot of that zone read, they forced other teams to bring an extra guy in the box and they gave him a lot of man-to-man coverage on the outside,” Warner said. “As a quarterback, you love that because you drop back, you pick out your best matchup and you just throw it to the one-on-one guy. Now that they’re not running as much and they don’t want to subject him to those kind of hits, now he’s playing more dropback quarterback, teams are playing more zone against him and he’s having to make more decisions, see more on the fly and be able to anticipate and make some of those throws that he hasn’t really had to make in the past.

“I don’t know if it’s regression or it’s just a young man that’s trying to learn. As I always say, it’s hard to learn at the best level. It’s hard to learn against the best players in the world and that’s what we’re asking some of these spread quarterbacks to do once they move into the NFL.”

Terrelle Pryor will work out for the San Francisco 49ers on Monday.

Pryor has auditioned for a host of teams this season at wide receiver as he attempts a conversion from quarterback.

Pryor worked out for the Seattle Seahawks last week.

Colin Kaepernick struggled again in Week 4 and was on the receiving end of trashtalk from Clay Matthews.

"You ain't Russell Wilson, bro," said Matthews during the fourth quarter to Kaepernick.

Matthews also sacked Kaepernick in the third quarter and mocked his trademark bicep-kissing celebration.

Matthews said after the game that the celebration was all in fun.

"Nah, it's not planned," Matthews said. "I was going to hit him with the predator, and then I had a light bulb go off in my head. It's just having fun. We're a bunch of kids out there running around and having fun at each other's expense."