It has been suggested that there is a slim chance that Sean Connery may return to Indiana Jones 4. Though early reports said no way, there have been so many script edits that it may be possible.
http://www.canmag.com/news/4/3/3512
Now that Ford and Connery are closer in age (in a sense), can he still pull off playing his father?
If he does make an appearance, we have to assume that the role won't be all that big.
but who knows
flabbybuns