With Chelsea travelling to Old Trafford on Sunday to take on Manchester United much has been made of the relationship between the two managers - Jose Mourinho and Louis van Gaal.
Both have their footballing philosophies, both have had massive success in the game - both once worked together.
In fact, Mourinho worked under Van Gaal at Barcelona.
Mourinho was brought into Barcelona by the late great Sir Bobby Robson and Van Gaal did not move him aside upon his arrival.
The Manchester United coach instead eventually made him even more integrated with the system at Barcelona - but let's be honest, you just want to see a picture of the pair looking silly in 1990's get-up.
Kappa was never kind to the footballing world, and in this excellent training kit Chelsea boss Jose Mourinho looks far from the suave and dapper manager that would go on to take Europe by storm with FC Porto, Chelsea and Inter Milan - where of course he defeated Van Gaal's Bayern in the Champions League final.
This Sunday it is not only Manchester United v Chelsea, but also Van Gaal v Mourinho, the master v the apprentice - and it can't come soon enough.