Bears quarterback Jay Cutler will undergo surgery on his fractured right thumb on Wednesday in Colorado, according to sources familiar with the situation. Chicago coach Lovie Smith said Monday that he believes Cutler could return to the field near the tail end of the regular season. "The plan is to get him back at the latter part of the regular season," Smith said. "This is what I wanted to know, 'Was it a season-ending injury?' No. From what I've been told right now, we can expect him back at the end of the regular season. For me, that's enough to go on."