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.
Bundesliga basement boys Greuther Furth have sacked coach Mike Buskens.
The promoted club have won only twice in 22 top-flight games this term and lie bottom of the table - 14 points behind fourth-bottom Wolfsburg but only four adrift of 18th-placed Hoffenheim in the relegation play-off place.
Buskens, 44, who led Furth to the second division title last season, was notified of the club's decision on Wednesday afternoon.
Club president Helmut Hack said on www.greuther-fuerth.de: "We know what we have to thank Mike Buskens for, so it was a decision that was very difficult for us.
"We still have a chance to stay up. Therefore, we want to try to give the team a new impetus."
Under-23 coach Ludwig Preis and sporting director Rouven Schroder will oversee first-team affairs until a permanent replacement is appointed.
Schroder said: "This is only an interim solution, until we find a new head coach."
Furth, who lost 1-0 at fellow strugglers Fortuna Dusseldorf last weekend, host third-placed Bayer Leverkusen on Sunday.