In an interview with SyFy’s Blastr.com, Singer revealed that he did indeed want Twilight wolfboy Taylor Lautner on board Mathew Vaughn’s X prequel…

X-Men producer and writer Bryan Singer cleared up some X-Men: First Class rumors for us at the unlikeliest of places—a church in Hollywood, where he was a guest speaker on Sunday. After the hour-long talk, Singer talked to us about the casting—which he is in the middle of doing at the moment. Kevin Bacon is in; Taylor Lautner is out, for now; Meagan Good is uncertain.

“I wanted Taylor [Lautner] to do it, I really did,” Singer said in an exclusive interview. “He’s doing a movie in Pittsburgh called Abduction and then he’s got the next Twilight movie. We talked about it a lot, he is a friend, and I really wanted to make it work. It just doesn’t look like it’s possible to do it.”

Source: Comic Book Movie

Looks like we won’t be seeing him after all, it would have really been interesting to see him part of the X-Men legacy though, I have to admit.