Ronny Deila stressed his desire to keep Fraser Forster at Celtic following the 4-0 victory over KR Reykjavik.
Executive vice-chairman Ed Woodward insists Manchester United are ready and willing to break the British transfer record.
Roberto Mancini has been appointed as Galatasaray manager.
The former Manchester City boss has agreed a three-year deal with the Istanbul giants, the club announced on their official website.
The Italian's first match in charge will be Wednesday's Champions League clash at Juventus.