The Argentine defender is at risk of missing their group opener against Qarabag due to a potential suspension.
Tottenham face being without Cristian Romero for their Europa League kickoff.AdvertisementAdvertisementRomero was sent off 18 months ago against AC Milan in the Champions League.
And the suspension - a one-match ban - will carry over into this season's Europa League.
UEFA have confirmed the ban will be upheld this term.