FC Barcelona's Dani Olmo was forced off the pitch during a La Liga match against Girona on September 15 at Montilivi after experiencing muscular discomfort.
Cristiano Ronaldo came up clutch for Portugal in the Nations League on Sunday, while Spain thumped Switzerland despite a first-half red card.
Spain forward Dani Olmo will be absent from Sunday's UEFA Nations League match against Switzerland due to a minor knee injury and is set to return to Barcelona early for treatment.
Chelsea have sealed a deal with Atletico Madrid to sign Joao Felix in a swap deal with midfielder Conor Gallagher to transfer to the Spanish club.
FC Barcelona's financial troubles have continued to overshadow their recent market success, despite securing one of their top transfer targets, Dani Olmo from RB Leipzig.
Spain prevailed in an eight-goal thriller to beat France 5-3 after extra time and win the Olympic men's football gold medal for the first time since 1992.