Fraser Forster was with Celtic between 2012 and 2014, before leaving the Glasgow side to move to Southampton.
Newcastle United's Freddie Woodman is starring on loan at Kilmarnock and suggests that Fraser Forster's successful move to Celtic could act as inspiration.
Southampton were beaten 4-2 by Chelsea at Stamford Bridge, missing the chance to move within one point of eighth in the Premier League.
Southampton fans were certainly not impressed by Fraser Forster's performance during the defeat to Manchester City on Saturday.
Willy Caballero's contract expires at Manchester City in the summer, which could pave the way for Southampton to sign him.
Everton are yet to find a permanent solution between the sticks, so here are three options that could provide it, including two from fellow Premier League clubs Southampton and Sunderland:
Everton are said to be interested in signing Southampton goalkeeper Fraser Forster in the summer.
Southampton are reportedly looking at Manchester City-owned Torino goalkeeper Joe Hart should Everton-linked Fraser Forster leave in the summer transfer window.
Fraser Forster joined Southampton from Celtic in the summer of 2014.
HITC Sport have been looking at some former Celtic players who fans might like to see back, including a Tottenham Hotspur midfielder.
What would a combined XI consisting of the current Southampton side and the one that Gordon Strachan guided to eighth in 2003 look like?
Ahead of a crucial tie against Borussia Monchengladbach, we look back at three of Celtic's best Champions League results of recent times - featuring classics against Barcelona, AC Milan and Manchester United.
Stars from Southampton, Sunderland and Liverpool all feature.