Everton manager Rafa Benitez has confirmed Yerry Mina suffered a calf injury in the win over Arsenal on Monday.
The Colombian defender only just returned from a hamstring injury.
Benitez said after the game: "To be fair, Yerry is a lad that has had bad luck with injuries.
"He was coming back after nearly one month with a problem with his hamstring but today it's a problem with his calf.
"We have to assess him.
"He's really down now but hopefully he can recover quickly."
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