The transfer window closes on Jan. 31 (find out when across Europe's top leagues here) and the final week of business is likely to prove significant to a number of leading players and clubs.
While some big deals have already been done -- Barcelona signed Ferran Torres for £46.3 million from Manchester City; Newcastle spent £37m to bring in Atletico Madrid's Kieran Trippier and Burnley's Chris Wood; while Aston Villa added Everton's Lucas Digne for £25m and loaned Philippe Coutinho from Barcelona this month -- several headline-making moves could yet happen between now and the deadline.