Moussa Dembele has sealed his six-month loan move to Atletico Madrid, with Islam Slimani arriving at Lyon to take his place.
Dembele arrives at the LaLiga champions as a direct replacement for Diego Costa, who left the Spanish giants last month, with a reported £29.6million option to buy in the summer.
The 24-year-old enjoyed two prolific seasons in front of goal in France after arriving from Celtic in 2018.
He leaves after notching 45 times in 108 appearances, including a brace in last season's Champions League quarter-final victory over Manchester City.