David Moyes is being eyed by Celtic as the man to replace Ronny Deila in the summer.
Celtic faced Moyes’ Real Sociedad side in a pre-season friendly and won 1-0 with the goal coming from Gary Mackay-Steven.
Moyes began his career in the green and white Hoops and made 28 appearances in three years before moving on to Cambridge United.
According to the Daily Mail, the 52-year-old tops the list of managers to replace Deila in the summer.
The Scot move to Manchester United in 2013 but was sacked in April as he failed to live up to high expectations in Manchester.
A spell aboard managing Spanish side Read Sociedad will also have given the manager valuable experience, even if his time there was one day shy of a year.
Moyes is thought to still have an affection for Celtic and although he would prefer a move to another Premier League team, a move up to Glasgow is a possibility.