Ousmane Dembele's Barcelona exit looks set to have a big knock-on effect on other deals, as the Catalan club look to get any one of six last-minute deals over the line.
The French forward appears to be bound for Paris Saint-Germain, despite earlier links to Premier League sides Manchester United and Newcastle United, and an early resolution could lead to a very busy few hours at the end of the window.
Barcelona have already added Ferran Torres and Adama Traore to their ranks in January, while Dani Alves has been able to make his second debut after arriving on a free transfer in the autumn.
