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.
Manchester United striker Robin van Persie has rejected talk that he is unhappy with David Moyes' coaching methods at Old Trafford.
Rumours surfaced suggesting Van Persie had not been impressed by Moyes' reign so far after replacing Sir Alex Ferguson at the helm of the Premier League champions.
However, the Dutchman, who is away on international duty with Holland, has moved to dispel the rumours and insists he is enjoying working under former Everton manager Moyes.
"It's great working with the new manager David Moyes," Van Persie is quoted as saying in De Telegraaf.
"He has his own style and methods and I like these.
"We are working very hard from the day we started our tour to Asia and Australia. This will result in good matches, that's for sure. There is a very good atmosphere at the club.
"I'm happy with the style of Moyes. He does his own training sessions, he's close with the players and prepares us with his staff very well for the next opponent. That keeps us in shape.
"Luckily, because the title of last year gave us hunger for more."