Selhurst Park centre-back Marc Guehi emerges as a key objective for Inter, while Bournemouth forward Antoine Semenyo holds a confidential buyout clause, and the Blues are keen on Portuguese prospect Cardoso Varela.
Serie A contenders Inter Milan have joined the race to sign the services of Crystal Palace defender Marc Guehi, though Liverpool continue to be the favourites to sign the 25-year England international.
Bournemouth attacker Antoine Semenyo possesses a release clause in his deal, but the team are maintaining it confidential as they aim to retain the 25-year-old Ghana player, who has attracted interest from Tottenham and Manchester United.
Chelsea and Barcelona are both tracking Dinamo Zagreb's 16-year-old Portugal striker Cardoso Varela, adding to the recruitment speculation around the emerging prospect.
Brighton have no intention to cash in on Cameroon player Carlos Baleba in January, even though the 21-year drawing interest from Manchester United last summer.
Manchester United have positioned Crystal Palace and England player Adam Wharton, 21, ahead of Baleba on their shortlist of transfer targets.
Manchester United are considering renewing Brazil star Casemiro's contract past this season, however only if the 33-year accepts a wage cut.
Attention in Casemiro has emerged from Brazil and Saudi clubs, yet Manchester United manager Ruben Amorim could argue for the ex- Real Madrid player to remain.
Barcelona goalkeeper Marc-Andre ter Stegen, 33, has emphasised that he does not intend to depart the club, even with interest from Manchester United and Newcastle United.
Crystal Palace full-back Daniel Munoz is wanted by Barcelona, but the Eagles will refuse to let the 29-year Colombia player depart in the winter.
Ex- Tottenham football officer Scott Munn's decision to take a role at Italian side Parma rather than Nottingham Forest is a additional indication that boss Ange Postecoglou is on shaky ground at the club.
New Newcastle sporting director Ross Wilson will lead an audit into the deal situation of the team's key players, as the team aim to prevent a repeat of the player saga that saw Swedish forward Alexander Isak, 26, join Liverpool.
Chelsea have no concern over the future of Ecuadorian talent Moises Caicedo, 23, after the very visible axing of his representative.
Caicedo is expected to be rewarded with a fresh deal by Chelsea to ward off attention from Real Madrid.
Borussia Dortmund are keen on Barcelona's 17-year-old Spanish midfielder Guille Fernandez, who has not yet earn a first-team appearance with the Spanish club.
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