Isagi's team cinched a win due to the awakening of Barou as a villain on the field. To cause more chemical reactions in the fourth stage, they picked one player from the other team, who demonstrated ego to devour them during the game. In the meantime, Bachira and the Top 3 are looking for the next opponent. Rin sees through Bachira's "monster" during their training, which forces Bachira to face his own ego.
In that case, he's the 
only one who fits the bill.
في هذه الحالة، إنّه الوحيد المُؤهّل لذلك
Dann wäre er der Einzige, der passt.
En ese caso,
él es el único que encaja ahí.
En ese caso,
él es el único que encaja ahí.
Dans ce cas,
je vois qu’un choix possible.
Allora la scelta è lui.
Nesse caso, só tem como ser "ele".
В таком случае…
нам подойдёт только он.