If Jorginho's deadline day move to Arsenal was the big one for Mikel Arteta's men then there's certainly still a deal that got away. Having chased Youri Tielemans for most of the summer before switching late on to Douglas Luiz, the Gunners haven't hidden their desire for a new midfielder.
The Italian midfielder's addition came as a late shock in January though. Perhaps due to the nature of the swap from Chelsea but also because his future appeared to be elsewhere and at the end of his contract.
Arsenal acted quickly once realising that Mohamed Elneny's injury was going to leave them short for the second half of the season. They had hoped to bring in Moises Caicedo from Arsenal but his failed move turned out to be one of the biggest sagas for a non-mover of the window.