Atletico Madrid winger Thomas Lemar is struggling to be fit for their Champions League clash with Manchester United.
The round 16 first-leg meeting will be staged this week.
With Yoan Carrasco already suspended, fellow winger Lemar was missing from training on Sunday.
Antoine Griezmann did make the session and the Frenchman is available to coach Diego Simeone.
He was in Pamplona, although he did not get to play a minute for Saturday's win against Osasuna.
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