Deadline are reporting that Kick-Ass director, Matthew Vaughn is back on board for X-Men:First Class. It was previously reported that Vaughan had passed on the gig, but there is some serious negotiations happening right now to get him on board! It’ll be interesting to see how this pans out, particularly considering how Vaughn left X-men 3 (after taking over from Bryan Singer who shot Superman Returns instead) weeks before it was due to start shooting!