Atletico Madrid are considering surgery for Diego Costa to finally fix a foot problem that has plagued the Spanish striker in recent weeks.
The 30-year-old went off at half-time during Los Rojiblancos' 3-2 win against Athletic Bilbao at the beginning of the month, before the striker had to be substituted again in the recent 1-1 draw against Barcelona, having given his side the lead in the 77th minute.
According to Spanish media outlet MARCA, Costa's recent substitutions have been down to him struggling to cope with a foot injury, with Atletico Madrid now considering surgery as a viable option for the Spanish international to finally fix the issue.
Costa is already a major doubt for his side's Champions League tie against AS Monaco, where a win will confirm their place in the last 16, although an operation on his foot could see the striker sidelined until 2019, with it being unclear how long he'll be out for.
It's been a difficult season for Costa in terms of goalscoring, with the forward netting just four times so far in all competitions, although three of his goals have come against Real Madrid and Barcelona, while he's also had to contend with a hamstring injury.
Atletico Madrid have kept within touching distance with sides at the top of La Liga, as Diego Simeone's side are currently just one point behind Barcelona, and a further point behind current league leaders Sevilla, while they're currently level on points with Borussia Dortmund in their Champions League group with three wins from their opening four games.