The Pittsburgh Steelers and Le'Veon Bell each prefer a contract extension this offseason but it remains to be seen if they can agree upon terms.

"We never will discount the use of the tag because that's collectively bargained," Kevin Colbert told reporters Thursday. "But, again, our goal is to have something done on a long-term basis."

The Steelers could still use the franchise tag on Bell, which would be worth approximately $14.5 million.

Asked if he's optimistic over a new deal, Colbert said, "I believe I am."

Bell's 1,946 total yards in 15 games stretched his average to 128.9 yards from scrimmage per game since 2013, an NFL record since the 1970 merger for a player's first five seasons.