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Newcastle United boss Rafa Benitez has been dealt a new injury blow with the new season just 90 minutes old.

Benitez must now wait for further news on DeAndre Yedlin after the right-back hobbled off against Tottenham Hotspur in the dying stages before leaving the ground on crutches.

It means United could have to turn to either Jamie Sterry of Javier Manquillo for next week’s away trip to Cardiff City.

When asked about Yedlin’s problem, Benitez said: “It is still too soon to know for sure.

“There is a problem with his knee, but we need to wait.

“The doctor has to assess him properly.”

Benitez, however, does hope that he will have two more options from the start next week against the Bluebirds.

Both Salomón Rondón and Yoshinori Mutō both boosted their fitness with run outs against Spurs.

He said: “I could see that maybe we were right not playing them from the beginning because you could see that they didn’t quite have the right understanding with their team-mates and maybe the fitness was not quite what you were expecting.

“At the same time, that is normal though because they came late during the transfer window.

“That is why it is better to do things quickly because you have the players ready and you can work with them.

“In this case, I am happy with their effort and movement and a lot of things, but still you can see that the understanding with the rest of the team-mates is not quite there.”