The Paris Saint-Germain striker was widely expected on a free transfer to the Santiago Bernabeu this summer, having been courted by the Spanish giants last year.
But, instead, Mbappe made a late U-turn and signed a new three-year contract with PSG to continue his journey to his hometown.
The reaction in Madrid, both at boardroom level and on the street, has reportedly been furious, with Mbappe set to be the jewel around which the club are building their next generation.
More than a week later, Mbappe’s decision apparently remains on the minds of some Real Madrid fans as they travel to Paris for the biggest game of the season.
Two fans had simulated what appears to be a PSG shirt with “Mbappy 0 Champion League” on the back. Another took the cheaper route of a cardboard sign with “Mbappe you will regret” written on it.
Another had ‘Mbappe’ and then a big middle finger emoji underneath.
Real Madrid hope Mbappe will regret his decision, and beating Liverpool tonight would be a start.