Selhurst Park centre-back Marc Guehi has become a primary target for Inter, while Bournemouth striker Antoine Semenyo has a confidential exit clause, and the Blues are tracking young Portuguese teenager Cardoso Varela.
Serie A contenders Inter Milan have joined the race to sign the signature of Crystal Palace centre-back Marc Guehi, though Liverpool remain the leading candidates to land the 25-year England international.
Bournemouth attacker Antoine Semenyo does have a release clause in his deal, but the club are keeping it confidential as they aim to hold onto the 25-year-old Ghanaian player, who has been linked from Tottenham and Manchester United.
Chelsea and Barcelona are both tracking Dinamo Zagreb's 16-year Portugal striker Cardoso Varela, bringing to the recruitment rumours around the emerging prospect.
Brighton are not looking to cash in on Cameroonian midfielder Carlos Baleba in the winter window, even though the 21-year-old attracting interest from Manchester United during the previous window.
Manchester United have positioned Crystal Palace and England midfielder Adam Wharton, 21, ahead of Baleba on their list of recruitment objectives.
Manchester United are considering extending Brazil midfielder Casemiro's deal beyond this campaign, but only if the 33-year accepts a wage cut.
Attention in Casemiro has come from Brazilian clubs and Saudi clubs, but Manchester United manager Ruben Amorim may make a case for the former Real Madrid player to remain.
Barcelona shot-stopper Marc-Andre ter Stegen, 33, has emphasised that he does not intend to leave the team, despite attention from Manchester United and Newcastle United.
Crystal Palace defender Daniel Munoz is wanted by Barcelona, but the club will not allow the 29-year Colombia international leave in January.
Ex- Tottenham chief Scott Munn's choice to join Serie A club Parma instead of Nottingham Forest is a additional indication that manager Ange Postecoglou is on uncertain footing at the club.
New Newcastle sporting director Ross Wilson will oversee an audit into the deal status of the team's top players, as the club aim to avoid a recurrence of the player drama that saw Swedish striker Alexander Isak, 26, join Liverpool.
Chelsea are not worried over the future of Ecuador midfielder Moises Caicedo, 23-year-old, after the public axing of his agent.
The midfielder is set to be offered with a new contract by Chelsea to deter attention from Real Madrid.
Borussia Dortmund are interested in Barcelona's 17-year Spanish midfielder Guille Fernandez, who has yet to earn a first-team appearance with the Catalan club.
Wildlife biologist specializing in sloth research with over a decade of field experience in Central and South America.