I just read this on Rotoworld:
Mets to wait on Wheeler for monetary reasons
A Mets insider told ESPN New York that the arbitration clock will play a role in Zack Wheeler's arrival date.
In other words, the Mets are going to wait until at least mid-June to promote Wheeler from Triple-A to avoid him gaining an extra year of arbitration-eligibility as a Super Two qualifier. None of this, of course, is unexpected. Wheeler, one of the top prospects in baseball, has fanned 47 batters in 43 1/3 innings this year at Triple-A Las Vegas. He'll be a fantasy asset down the stretch.
Standard 5x5 roto, 16 team (3) keeper, 10 Hitting and 8 Pitching active players, 4 reserve, no DL
3b: M Cab
OF: Bruce, Cespy, Aoki, Avisail
P: G Gonzalez, Cobb, Fister, Kuroda, Ryu, Tillman, M Perez, Iwakuma, Erasmo, A Reed, Chapman