Thiago suffered a serious injury, says Heynckes
Jupp Heynckes says Thiago Alcantara suffered a serious muscular injury during Bayern Munich's 2-1 win over Anderlecht in the Champions League on Wednesday, but Arjen Robben may have escaped more lightly.
Thiago was replaced just before half-time, with Javi Martinez coming on for the midfielder as Bayern shrugged off a slow start to pick up all three points.
Robben, meanwhile, was withdrawn three minutes into the second half.
Speaking after the match, Heynckes revealed the club faced an anxious wait to discover the severity of the Spain star's problem.
"Thiago suffered a serious muscular injury," he told Sky.
Of the veteran Dutchman, Heynckes added: "Robben said, he thinks it's not too bad. We have to wait for the diagnosis."
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Heynckes was not completely satisfied with his side despite the victory, a result that keeps them second in Group B, three points behind Paris Saint-Germain, ahead of a clash with Unai Emery's side at the Allianz Arena next month.
Anderlecht had the better of the chances in the first half but the visitors won it after the break thanks to goals from Robert Lewandowski and Corentin Tolisso.
However, Heynckes felt Bayern were complacent against an Anderlecht side yet to pick up a point in the group stages.
"We played very badly in the first half and gave away two or three big chances," he added.
"Of course you need to be direct about that with the team. We went into the game thinking it would be an easy game because our opponents didn't have a point in the group. We gave the ball away far too often and they had too much space."