Back in 2010 the first draft of Deadpool leaked online which featured a very different Colossus appearing alongside the Merc with a Mouth. Daniel Cudmore who played the character in all the past X-Men films most recently Day sof Future Past expressed interest in reprising the role of the character in the greenlight Deadpool spin-off but it looks like that will not be happening. The actor took to Twitter to reveal he will not be returning to the character alongside Ryan Reynolds:
Thanks everyone for all the support for me 2 reprise the role of #Colossus in #Deadpool but unfortunately it won’t be happening for me con’t
— daniel cudmore (@danielcudmore) February 17, 2015
I’ve had a blast playing such an awesome character over the years! #Deadpool will be kick-ass with #TimMiller and @VancityReynolds #BestFans
— daniel cudmore (@danielcudmore) February 17, 2015
There have been discussions that they may simply recast Colossus and give him his Russian origins as seen in the comics. Others have pointed out that they may just cut the character out altogether and go with fan-favorite Cable which would directly into an X-Force film.
Deadpool hits February 2016