ALLEN PARK, Mich. -- Dominic Raiola's eyes were red. For his entire career, he has been a part of the Detroit Lions organization and for the second straight year, the team's career leader in games started is leaving the team's facility not knowing if he'll be back.

Raiola, who finished his 14th season with the Lions during Sunday's 24-20 loss to the Dallas Cowboys, insisted all year he had more football in him than just the 2014 season. That's something the 36-year-old Hawaii native reiterated Monday as he and the rest of the Lions were cleaning out their lockers.

"I know it," Raiola said.

Raiola said he has not been given any indication by the Lions whether they would like him back for a 15th season.

Raiola had a renaissance during the 2013 season but the Lions drafted his potential replacement, Travis Swanson, in the third round of May's draft. Swanson started four games at right guard and one game at center this season, but injured his right knee during the playoff loss to Dallas. Raiola's play was also less consistent than it was in 2013, when he was graded by Pro Football Focus to be the No. 2 center in the league.

This season, PFF rated him as the No. 37 center in the NFL.

Raiola wasn't the only offensive lineman with a future in doubt with the Lions.

Left guard Rob Sims is one of Raiola's closest friends on the team. Like Raiola, the 31-year-old Sims is a free agent and has expressed his desire to remain in Detroit, where his family has built a home. Sims is the only Detroit offensive lineman to start all 17 games this season.

But Sims also said he doesn't know whether he'll be with Detroit next season and said if this was his last game with the Lions, "it was a [heck] of a ride and a great five years."

When he talked about his conversations with Raiola and the Lions' offensive line over the past day, Sims also got choked up.

"I just, just in the locker room, I went guy-by-guy, telling them what I thought of what their game could be, where it could go," Sims said, choking up a little bit. "And what I thought of them as a man. This is huge for us, man.

"We put everything on this. We put our all into this, for real, you know. So it's tough. It's part of the game, though. You have to deal with it."

For now, both Sims and Raiola are waiting to know if they'll play again and if they'll play again in Detroit.

Lions coach Jim Caldwell did not give any indication what the team will do with Sims and Raiola and said it is "going to take a little bit" when making decisions on the pair and other Lions.