Ryanair and Jet2, not going to happen. Might be a 737 but the Ryanair crew are only trained for the 800, also the age of the a/c does not help. Also Jet2 does cargo, and Ryanair will not carry cargo, only its own from base to base, either company mail or a/c parts for its own needs.
Now someone like Skyeurope might be a better choice.
Lee