During Spurs' 1-0 loss to RB Leipzig in the first leg of their Champions League round of 16 tie, Jose Mourinho decided to try something else and take Dele Alli off, something which did not sit well with the midfielder.
The English international was seen hurling a water bottle and a boot, but his manager only used his words in what was clear disagreement on the decision.
A Timo Werner penalty in the 58th minute gave the German team an advantage going into the second leg, and in as much as Mourinho told the press after the game that they could overturn it, it might not be easy.
On the Alli reaction, Mourinho said: “I think he was angry with his performance. Not with me.”
At 32, Leipzig's coach Julian Nagelsmann is a young coach on the rise, producing stunning results in Europe, just like Mourinho was at the start of the century.
The second leg will definitely be interesting.