Atletico Madrid could be handed a major boost ahead of tomorrow's Champions League final after Diego Costa trained with the team.

The Brazilian-born Spain international has been a doubt for the highly-anticipated contest after suffering a hamstring injury during Atletico's La Liga title-winning match against Barcelona last weekend.

Numerous reports have claimed that Costa sought help from controversial 'placenta doctor' Mariana Kovacevic in order to win his fitness race in time for the final.

While the club are yet to confirm Costa's inclusion, the prolific forward trained in Lisbon on the eve of the match, which could result in the double for Atletico or Real's La Decima.