The Phillies have agreed to a one-year, $2MM extension with Grady Sizemore that will keep the outfielder in Philadelphia for 2015, the club announced. Sizemore’s contract includes performance incentives that could boost its value to $5MM, per MLBDailyDish.com’s Chris Cotillo (via Twitter).

Sizemore, 32, was one of the game’s most interesting stories last year, when he returned from a long layoff and had a big spring with the Red Sox. The fairytale took a turn when Sizemore struggled to keep pace in Boston, however, and he ultimately was designated for assignment as his OPS dipped to .612.

Philadelphia gave Sizemore a late run, however, and he had better overall success there. With the Phillies, Sizemore put up a .253/.313/.389 slash with three home runs over 176 plate appearances.

Spending most of his time in the corner outfield with the Phillies, Sizemore ultimately landed with approximately average defensive ratings there. His time in center, mostly with Boston, was less promising, as both UZR and Defensive Runs Saved viewed him as a below-average performer.

For the Phillies, the move does offer some cost certainty, and opens renewed questions about the team’s intentions as the offseason nears. All three of the team’s Opening Day starters — Domonic Brown, Marlon Byrd, and Ben Revere — have been mentioned as trade candidates (the former two in particular). Brown and Revere both swing from the left side of the plate, as does Sizemore.