Manchester City are still reportedly attempting to prise Kalidou Koulibaly from Napoli.
Serie A champions Juventus have reportedly been offered Wolves star Adama Traore.
PAOK face Benfica in the third round of Champions League qualifying, while Celtic's conquerors Ferencvaros meet Dinamo Zagreb.
Barcelona revealed two signings on deadline day, Atletico brought in a familiar face, while Juventus' Emre Can moved to Borussia Dortmund.
Highly coveted Dinamo Zagreb midfielder Dani Olmo has been linked with a host of clubs, but RB Leipzig have won the race for his signature.
Highly coveted youngster Dani Olmo has chosen to join Bundesliga club RB Leipzig, according to Dinamo Zagreb coach Nenad Bjelica.
West Ham are said to want England's Ross Barkley, while Atletico Madrid still fancy Edinson Cavani - but not at PSG's asking price.
Having starred for Wolves, Adama Traore is linked to three of Europe's biggest clubs.
Barcelona have reportedly failed with one bid for Dani Olmo but continue to be linked with the Dinamo Zagreb and Spain winger.
Barcelona are in negotiations with Dinamo Zagreb to sign Dani Olmo, according to the Spain winger.