Kylian Mbappe has posted a rallying cry to his Paris Saint-Germain teammates after Idrissa Gueye faced vile abuse over his heavy challenge at the training ground.
The superstar forward, 23, feared he had suffered a broken left foot after a stamp from Gueye during a drill on Monday.
Scans showed Mbappe escaped with a knock but he is facing a race to recover in time for Wednesday's Champions League last-16 tie against Real Madrid.
PSG have a slender advantage heading into the second leg at the Santiago Bernabeu thanks to the Frenchman's wonderful, last-gasp strike at the Parc des Princes in mid-February.
While Mbappe was named in Mauricio Pochettino's squad which travelled to the Spanish capital on Tuesday, it remains to be seen if he will be fit to feature against Los Blancos.
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"Kylian Mbappe received a shock on his left foot during training today," a PSG statement reads. "He was treated this afternoon. The clinical examination is reassuring and a new assessment will be made in 24 hours."
There was a similar scenario last season when Mbappe featured in the matchday squad but did not make it onto the pitch for the second leg of the semi-final against Manchester City.
The World Cup winner sustained a calf injury during a Ligue 1 fixture a matter of days before the encounter at the Etihad. In his absence, PSG lost 2-0 to crash out of Europe with an aggregate 4-1 defeat by Pep Guardiola's side.
Pochettino knows exiting at the last-16 stage could prove fatal to his career with the French giants, who are still searching for their maiden Champions League triumph.
Given what is at stake, Gueye came under fire from fans after his tackle risked injuring his teammate and some even sent him abhorrent racist abuse via social media.
But Mbappe took to Instagram to throw his weight behind the former Everton star, tagging him and writing: "All together. Always. This is Paris."
The message proves there is no bad blood in the PSG camp ahead of a fixture which could define their season.
Pochettino's side have a huge 13-point lead at the top of Ligue 1 but the Argentine will be judged by his superiors on continental rather than domestic success.
Mbappe has been the most important player for the Parisians this season, outshining Lionel Messi with 19 goals and 14 assists across all competitions.
Many of his best performances have come on the European stage and his winner in the first leg against Real Madrid was his fifth goal in seven Champions League appearances.
