Jimmer Fredette -- I Might Go Play In Europe Next Year

He's killing it in the D-League ... but Jimmer Fredette might not stick around to see if the NBA calls him up again ... telling TMZ Sports he's considering taking his talents overseas.

27-year-old Fredette -- the 10th overall pick in the 2011 NBA Draft -- didn't blossom into a superstar right away ... and was sent down to the D-League to polish his skills.

Jimmer is flourishing with the NY Knicks D-League squad -- he was the MVP of the 2016 D-League All Star game.

So, when we saw him out in NYC Thursday we had to ask ... how much longer do you stick around waiting for the NBA? The answer ... might not be that long.