Deadline day has come and gone — with a series of questions left behind. We've answered the key ones across all clubs

Manchester United attempted to sign former Premier League midfielder Douglas Luiz in the final hours of transfer deadline day, according to reports. Ruben Amorim was expected to bolster his squad at Old Trafford in January following a dismal start to his reign as manager.

Manchester City also took their January spending above £185 million ($230m) by signing Nico Gonzalez from Porto, having already snapped up Omar Marmoush, Abdukodir Khusanov, Vitor Reis and Juma Bah as Pep Guardiola tries desperately to arrest his side's shocking slump in form.