I think it is a huge worry, whether or not Flanagan was good enough to help win promotion. Wright is always injured and Arby, by all accounts, is nowhere near mobile enough after his injury - it might all be in his head, but the fact that they were thinking of loaning him out suggests he's not what we need. He didn't get a loan anyway and it's possible that nobody was prepared to take the risk on his fitness. We have got rid of Alves and Younger in this window as well, and isn't Almond out on loan too? It doesn't matter that they hadn't started a league between them - they were there as a back-up, just in case.
Given our horrendous run with injuries to CBs over the last year or so (Wright, Willis, Arby, Sanderson all crocked for significant periods), we really do need more cover for that position. Comments generally have been that O'Nien is not really a centre half, so I hardly think him coming back gives us adequate cover, especially as Doyle seems to have lost the plot recently and needs a rest.