With the buzz that the OT cast are getting just from appearing in Days of Future Past, Fox would likely to bring them back most especially if DOFP ends up grossing more than $500 million worldwide.
X-MEN RI5E' MUTANT OF THE MONTH | COLOSSUS | PORTRAYED BY DANIEL CUDMORE
"I can help you" - X2
"Yeah, she took off" - X3
"Mystique" - X4