Celtic boss Ronny Deila says keeping his best players will take priority over acquisitions in the transfer window.
Chelsea striker Fernando Torres is understood to be set for a return to Atletico Madrid, according to Sky sources.
West Brom plan to hold contract talks with head coach Steve Clarke in the new year, the Barclays Premier League club have announced.
Clarke, who took over at The Hawthorns in June 2012, is out of the contract at the end of the season.
The 50-year-old replaced Roy Hodgson, after he had been appointed England manager, at the Black Country club in what was his first managerial role having previously been assistant manager at Chelsea, West Ham and Liverpool.
The Baggies are currently 10th in the table, with Clarke having guided them to eighth last season.
In a statement on the club's official website, sporting and technical director Richard Garlick said: "Steve's contract situation was discussed at last month's board meeting.
"We decided that we would open talks with Steve in the new year which, historically, we feel is the appropriate time to address such matters."