Young player in having a bad game shocker.
Relax, he is a 21yo CM, he will have a bad game occasionally. He came from what, 4 good games on the bounce? By that standard we should be going back to Benfica with a receipt for Lindelof in hand asking for a refund.
Personally I've seen enough in the friendlies to indicate he would make a very decent squad option for this year. Our other midfielders are 36, 29, 29, 28 and 24. We have plenty of experience in there so we can afford to have a youngster who's performances will fluctuate a bit.