Chelsea have completed the £29m signing of PSV Eindhoven winger Noni Madueke, who becomes their sixth January signing and takes their spending to £190.2m.
Cody Gakpo has arrived in England for a medical ahead of his expected move from PSV Eindhoven to Liverpool.
Manchester United will face Barcelona in their Europa League play-off in February, while Jose Mourinho's Roma will take on RB Salzburg.
Luuk de Jong scored one & assisted another in a second-half cameo as PSV beat Arsenal 2-0, with the Gunners missing the chance to seal top spot in Europa League Group A.
Arsenal's Europa League group game against PSV Eindhoven at the Emirates on Thursday has been postponed.
Southampton have told PSV Eindhoven they are prepared to increase their offer for forward Cody Gakpo after having an initial bid rejected.