Former Celtic manager Martin O'Neill has met up with a club legend at an event to launch his new autobiography.

The Northern Irishman, 70, released On Days Like These with a party at The Landmark London hotel.

Stiliyan Petrov reunited with his former gaffer at the event and posed for a picture on Instagram. 

Glasgow Times:

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O'Neill said: "I'm so grateful to so many old friends who attended and helped make it such a special occasion."

Alex McLeish also attended the book launch. 

O'Neill was in charge of the Hoops for five years during the noughties before he left for Aston Villa. 

He led the club to seven trophies and the 2003 UEFA Cup Final.