The Tampa Bay Buccaneers haven't chased Adrian Peterson in free agency, but Dirk Koetter was interested to hear that Jameis Winston spent Thursday working out with the running back.

Winston's personal quarterback coach, George Whitfield, posted a photo on Instagram of himself with Peterson, Winston and Winston's strength and conditioning coach Tim Grover in Houston.

Whitfield also posted a photo of himself with Winston, Peterson, DeSean Jackson and Mike Evans after Tuesday night's Houston Rockets game.

"I've seen Adrian Peterson many times -- one of the best running backs to ever play," Koetter said. Then, after a long pause, he added, "I'm anxious to talk to Jameis and ask him about how his workouts went."

Peterson, 32, became an unrestricted free agent March 9 when the Minnesota Vikings opted not to pick up the option on his contract, which would have paid him $18 million for 2017.