London Fletcher has said that he has not decided whether he will continue his NFL career in 2013.
The Washington Redskins linebacker, who has previously had stints at the St Louis Rams and Buffalo Bills, has played in the league since 1998.
The 37-year-old told the Washington Post: "I think we all, as athletes, have to imagine ourselves not playing football.
"If you don't picture yourself not playing, then you won't be prepared. So obviously I have thought about that. I have thought about that for a number of years.
"So it's just a matter of taking it one day at a time. It's a process, again. I'm not going to rush anything, just continue to see how I feel."
Fletcher was the leading tackler for the Redskins in 2012 with 139, as well as three sacks and five interceptions.