In his age 23 season, the injury-prone Ceciliani missed a week with a hamstring strain in August, but still played in a career-high 113 games for AA Binghamton where he hit .268/.322/.380 with 17 doubles, six triples and six homers, and a 6.3% walk rate and a 22.8% strikeout rate. He was also 31-of-38 (82%) stealing bases. The left-handed hitter split his time between centerfield (58 games) and left (48 games).
He hit .243/.304/.350 in 103 AB vs. lefties in 2013 and .276/.328/.390 in 315 against righties.
He does not profile offensively in an outfield corner at all. His only hope of starting everyday is in centerfield. Even there, he would struggle to put up a .300 on-base percentage in the big leagues as pitchers will exploit his aggressive approach. On the other hand, he runs well, and offers the ability to play center or left, but does not have the arm for right.
Ceciliani is most likely to stick as a fourth/fifth outfielder who can add speed/defense in LF off the bench and picks up some spot starts for a MLB team against right-handed pitching. He is Rule 5 eligible for the first time this winter (if you’re curious, the full list is available here) and I do not expect the Mets to add him to the 40-man roster this winter.