10 Theories How Wolverine Can Fit Into X-Men: Apocalypse
3. He Won't Remember Days Of Future Past
While we're getting Wolverine in the film, that doesn't mean it'll necessarily be a recognisable version of the character - there's an awful lot of memory loss to deal with first.
The method of time travel used in Days Of Future Past involved the projection of consciousness into the past, so anything that happened under the influence of the future version wouldn't be remembered by the past one (seen briefly when Wolverine freaked out about Stryker at the nexus point). This essentially means 1980s Wolverine will remember very little of what happened between sleeping with a gangster's girlfriend on a water bed in New York and waking up after being dredged out of the Potomac by Stryker.
That's before you get to the possibility of the memory loss he suffered in the original timeline after his adamantium creation - with so much amnesia that even a soap opera writer would feel overwhelmed, Logan in Apocalypse is likely to be a totally fresh character.
Although, given how at this point the audience knows pretty much everything there is to know about Wolverine's past (this'll be the third time his origin has been flirted with), we don't really need the mysterious backstory plot device any more, so maybe Singer will be bold and slyly drop this plot element.