The fee was the largest ever received by Lyon from the sale of a player, though this record was again broken on 5 July 2017 by the transfer of Alexandre Lacazette to Arsenal for a fee of €53 million. It was also a Bundesliga and Bayern record for a signing, surpassing the previous record of €40 million that the club spent in buying Javi Martínez from Athletic Bilbao in August 2012. He made his debut for the club on 5 August, starting in a penalty shoot-out victory over Borussia Dortmund which saw Bayern crowned Supercup champions. He then scored on his Bundesliga debut on 18 August, netting Bayern's second goal in a 3–1 win over Bayer Leverkusen. On 5 December 2017, with qualification to the Champions League knockout stages already secured, Tolisso netted a brace in the Bayern's final group match to earn the club a 3–1 win over PSG; though the result was not enough to see Bayern claim top spot. On 3 April 2018, he scored a thumping long-range goal to double the lead in a 4–0 away victory over SC Freiburg. On 7 April, Tolisso equalised as Bayern came from behind to defeat FC Augsburg 4–1 and win the league title with five games remaining. Tolisso started the season as a World Cup champion after winning the title with France. On Matchday 3 in the Bundesliga, Tolisso ruptured a cruciate ligament in his right knee in a 3–1 victory against Bayer Leverkusen on Saturday, September 15. Following the injury, French national team coach Didier Deschamps was convinced that Tolisso will "come back as strong, if not even stronger". He also believes that the 2019 season will be "much better for you". During Bayern's winter trip training in January 2019 in Doha, Qatar, Tolisso was reported to be able to jog on an anti-gravity treadmill without any problems. He is set to return to the pitch in March 2019, which, according to Bayern Munich coach Niko Kovac, is "earlier than expected". Though born in France, and having represented the nation at various youth levels, including the U21 side with whom he was the captain, Tolisso was also eligible to represent Togo through his paternal lineage. In 2016, Togo manager Claude Le Roy revealed that he would try to convince Tolisso to represent the nation instead of France. Tolisso had previously acknowledged his ties to Togo but was loyal to France, stating that "I was born here and grew up here."