Celtic midfielder Liam Henderson has revealed on social networking site Twitter that Southampton duo Fraser Forster and Virgil van Dijk are the two best players he has played with in his career so far.
Goalkeeper Forster and defender Van Dijk are former Celtic players who are currently playing for Premier League club Southampton.
England international goalkeeper Forster had two separate loan spells at Celtic before joining the Scottish Premiership giants on a permanent contract in 2012.
The 28-year-old left the Bhoys for Premier League outfit Southampton in the summer of 2014.
Van Dijk was on the books of the Hoops from 2013 until the summer of 2015, when he moved to Southampton.
Celtic have started pre-season preparations already under new manager Brendan Rodgers.
The Glasgow giants will be aiming to qualify for the group stage of the 2016-17 Champions League campaign.