The Aston Villa assistant manager was back at Stamford Bridge and was welcomed with open arms by his former club.
After Dean Smith's side went down 2-1 at his old stomping ground, Terry tried to keep the peace with the present Blues players.
Wincing Kovacic - who played the full 90 minutes - visibly let out a yelp and quickly hurried off, shaking and grabbing his hand to try and numb the obvious pain.
Hard-as-nails Terry, who played 717 times for the West London club and won 14 major trophies, then held up his hand to say sorry for the accidental damage done.
I think Terry just broke Kovacic's hand giving him a high five pic.twitter.com/QG1rM2pp5D— Sam (@Sam_Hamlet) December 4, 2019