Transfer deadline day was as busy as it gets for a handful of Europe's most notable teams as they finalized deals for players they hope will improve their fortunes for the rest of the season. AC Milan were arguably the most active team in the final hours of the transfer window,

Manchester City and Aston Villa made big moves just before the midseason transfer window closed on Monday. Four-time defending Premier League champion City secured a late deal for Porto midfielder Nico Gonzalez for a reported $60 million,

Europe's winter transfer window closes on Monday, with teams trying to secure late deals in the market before the deadline. Manchester City, Aston Villa and Tottenham might be among the busiest clubs.