Selhurst Park centre-back Marc Guehi emerges as a primary target for the Italian club, while Bournemouth striker Antoine Semenyo holds a secret release clause, and the Blues are tracking young Portuguese prospect Cardoso Varela.
Serie A contenders Inter Milan are now part of the competition to acquire the signature of Crystal Palace defender Marc Guehi, but Liverpool remain the frontrunners to sign the 25-year-old English international.
Bournemouth attacker Antoine Semenyo possesses a release clause in his deal, however the team are keeping it private as they aim to keep the 25-year-old Ghana international, who has attracted interest from Tottenham and Manchester United.
Chelsea and Barcelona are each watching Dinamo Zagreb's 16-year-old Portugal striker Cardoso Varela, bringing to the recruitment speculation around the emerging prospect.
Brighton have no intention to cash in on Cameroonian midfielder Carlos Baleba in the winter window, despite the 21-year-old drawing interest from Manchester United last summer.
Manchester United have positioned Crystal Palace and English midfielder Adam Wharton, 21-year-old, above Baleba on their list of recruitment objectives.
Manchester United are considering extending Brazilian midfielder Casemiro's deal past this campaign, but provided the 33-year accepts a wage reduction.
Interest in Casemiro has come from Brazil and Saudi Arabia, but Manchester United manager Ruben Amorim could argue for the ex- Real Madrid player to stay.
Barcelona goalkeeper Marc-Andre ter Stegen, 33, has made it clear that he has no plans to depart the team, despite interest from Manchester United and Newcastle United.
Crystal Palace defender Daniel Munoz is wanted by Barcelona, yet the Eagles will not allow the 29-year-old Colombian player leave in January.
Ex- Tottenham football officer Scott Munn's choice to take a role at Italian side Parma instead of Nottingham Forest is a additional sign that manager Ange Postecoglou is on uncertain footing at the club.
Recently appointed Newcastle sporting director Ross Wilson will lead an audit into the contract status of the team's key players, as the team aim to prevent a repeat of the transfer drama that saw Sweden forward Alexander Isak, 26-year-old, move to Liverpool.
Chelsea have no concern over the future of Ecuador midfielder Moises Caicedo, 23-year-old, after the public axing of his agent.
The midfielder is expected to be rewarded with a new contract by Chelsea to ward off attention from Real Madrid.
Borussia Dortmund are interested in Barcelona's 17-year-old Spain youngster Guille Fernandez, who has not yet earn a first-team appearance with the Spanish side.
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