Eventually, maybe. However, plans to backfill Thomas Cook capacity principally involved adding more based aircraft for S2020, but a certain Covid-19 put paid to that. Meanwhile, FlyBe's demise came right at the start of C-19 ... I don't think that any new based aircraft have come to MAN on the back of that. We'll see what happens in Summer 2022, if we can finally shake free from covid theatre.
I seem to recall that the MAN-based Thomas Cook fleet was in the mid-twenties at the end, but could be mistaken on that.