Paris St-Germain are in discussions with Mohamed Salah regarding a potential free transfer when the 32-year-old Egypt striker's Liverpool contract expires at the end of the season.
Arsenal, Liverpool, Chelsea, and Tottenham are keeping tabs on Jamie Gittens, Borussia Dortmund's 20-year-old England Under-21 forward.
Manchester United, Tottenham, Barcelona, and Paris St-Germain scouted 25-year-old Egypt forward Omar Marmoush during Eintracht Frankfurt's Europa League clash on Thursday.
Bournemouth are open to summer offers for 24-year-old Ghana forward Antoine Semenyo, with Liverpool among the interested clubs.
Arsenal are in advanced negotiations with Real Sociedad's Roberto Olabe to take over as the Gunners' sporting director, replacing Edu.
Bournemouth, Brentford, and Southampton are monitoring 22-year-old Portuguese forward Fabio Silva, currently on loan at Las Palmas from Wolves.
Liverpool are aiming to outpace Manchester United in the race to sign Hungary full-back Milos Kerkez, 21, with Bournemouth valuing him at £40m.
Newcastle are prepared to sell 34-year-old former England right-back Kieran Trippier during the January transfer window.
Al-Hilal plan to compete with Arsenal for the signing of 21-year-old Spain Under-21 winger Alberto Moleiro from Las Palmas.
Luton would need to pay up to £1.5m to part ways with manager Rob Edwards, who signed a four-year deal in the summer.