The end of the -300s?
So maybe Jet2 are just getting the most out of the remaining G-CEL series while they can. Don't know how many are left now.
After that it looks like JER will go. Are the two French airfields -800 capable?
Cant see them tying up with anyone permanently. Jet2 seem fiercely Brand and airframe loyal. Unless of course, they draft in Summer Renters with Jet2 basic graphics.