Bayern Munich star Mats Hummels was quick to send a message to Liverpool bodd Jurgen Klopp after the two teams were drawn together in the Champions League knockout stages.
Klopp managed Hummels for six years at Dortmund before he departed to Bayern Munich.
Liverpool will host Bayern at Anfield first before travelling to the Allianz Arena for the second leg.
And Hummels is clearly looking forward to facing Klopp with the German defender taking to Twitter almost immediately.
I 👀 u my former coach 😁
— Mats Hummels (@matshummels) December 17, 2018