Gnonto would be decent, but I get Lookman vibes from him, and would hope that we could aim a bit higher than him. If we could get someone like Mbeumo from Brentford to play on the opposite flank to Ndiaye, we'd be in business!
We also need to be looking for new full-backs on both sides. Dumfries contract at Inter ends this coming summer; we really should be in for him at right back.
Mykolenko's contract ends in 2026 and I think we need to sell him and upgrade rather than looking for a crap 'back up'. Zinchenko's contract is also due to end in 2026. He's not getting much game time at Arsenal at the moment, and I can see them being willing to sell. He's not great, but he is a Champions League standard player, and a significant upgrade on Mykolenko imo.