Manchester United have offered Real Madrid the chance to sign Anthony Martial as a replacement for the injured Vinicius Junior. A loan deal with an option to make the move permanent has been proposed.
Bayern Munich are looking to sign Man Utd midfielder Scott McTominay on loan and could allow Ryan Gravenberch to move in the opposite direction.
Napoli are prepared to rival Man Utd for Fiorentina midfielder Sofyan Amrabat.
Liverpool are ready to move for Atletico Madrid forward Joao Felix if they end up losing Mohamed Salah to Saudi Arabia.
While a move for Felix remains conditional, Liverpool are intent on pursuing Crystal Palace midfielder Cheikh Doucoure and have not been scared off by a £70m asking price.
Chelsea have identified Bayer Leverkusen right-back Jeremie Frimpong as a possible replacement for the injured Reece James and are ready to launch a bid for the £30m-rated defender before the end of the week.
Another right-back, Ivan Fresneda of Real Valladolid, will join Sporting CP imminently but the Portuguese side have an agreement with Chelsea to give the Blues the chance to match any future bids for the Spaniard.
Instead, Barcelona hope to send unwanted defender Clement Lenglet to Sevilla for the remainder of the current season.
Tottenham Hotspur manager Ange Postecoglou has made Nottingham Forest forward Brennan Johnson his top target for the final days of the window.
An offer from Paris Saint-Germain for PSV Eindhoven winger Johan Bakayoko is imminent. The French side are ready to bid €25m (£21.5m) but PSV want over €30m (£25.8m) to sell the 20-year-old.
PSG have offered €80m (£68.7m) for Eintracht Frankfurt striker Randal Kolo Muani, with Hugo Ekitike potentially moving in the opposite direction for €20m (£17.2m).
Manchester City have submitted a second offer for Wolverhampton Wanderers midfielder Matheus Nunes worth over €60m (£51.6m).