Manchester United and Arsenal are tracking Celtic goalkeeper Artur Boruc.

The People says though Boruc signed a new £32,000-a-week deal in December taking him up to 2011, he has an escape clause and is AC Milan boss Carlo Ancelotti's No.1 transfer target.

Arsenal and Manchester United have been watching developments with Boruc and could join the race should Celtic cash in.

Gunners boss Arsene Wenger is a big fan of Boruc - 28 this week - while Sir Alex Ferguson is also monitoring the situation.