Barcelona's next game is on November 23, so Lewandowski will only miss the Nations League games. In fact, instead of wasting energy on a garbage tournament, he will have a good rest and prepare for the next game, in this case it is beneficial for the club. With Yamal, the situation is different, but now all the clubs are in about the same situation and Barcelona is far from the worst situation among all.
But with this minor injury, it actually sounds like good news, because they can really rest and don't need to follow the Nation League. haha.. Sorry, just kidding.
Whatever, the point is fortunately they only suffered minor injuries, so that when the important matches in several upcoming UCL and La Liga matches, they can be fully fit again. And fortunately the match in November, maybe
it won't be too tough, except in the UCL against Brest who has never lost.
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By the way, the second factor that will be important for the players is accumulated fatigue. The injuries that many players have already received are obviously the consequences of last season (it is unlikely that such consequences could have occurred in 15+ games of the current season). Roughly speaking, the fact that Lewandowski will rest a little now will play a big role towards the end of the season when the players will be exhausted without rest/rotation.