Bolton Wanderers manager Neil Lennon is currently watching the Premier League International Cup quarter-final tie between Celtic and Manchester City at the City Academy Stadium.
Just prior to the start of the encounter, Celtic posted the following photo of Lennon and his successor at the Bhoys, Ronny Deila, on social networking site Twitter.
Lennon left Celtic at the end of last season after achieving huge success with the Scottish giants and was appointed the Bolton boss in October 2014.
The former Northern Ireland international midfielder was in charge of the Bhoys from 2010 to 2014 and will go down in history as one of the greatest managers of the club.
During his time at Celtic Park as manager, Lennon won the Scottish Premier League title three times and the Scottish Cup twice.
Lennon’s successor, Deila, has done quite well in his first season in Scotland so far and is on course to lead the Glasgow outfit to a domestic treble.
Celtic have already won the Scottish League Cup, and are in contention of clinching the Scottish Premiership and the Scottish Cup this season.