Filipe Luis suffers tendonitis LaLiga - Atletico Madrid Undergone tests and on unique training regime

In yet more frustrating news for Atletico Madrid defender Filipe Luis, he will face longer on the sidelines as he recovers from injury.

After three weeks out with a muscle injury in his right leg, he is now undergoing treatment for tendonitis in his left heel.

The No. 3 has felt discomfort since Wednesday's training session, when he was close to a return to action.

Now, he will follow a unique training regime and wait for news on the extent of the problem.

Having already missed the last five games with a hamstring injury picked up over the winter break, Luis will be hoping that it is not a serious problem.