The 19-year-old's loan spell at Wigan is up this week, and his future remains up in the air.
"We will make a decision shortly," Rosler told Wigan Today.
"But Tyias has impressed me, definitely. I like him. He came here highly recommended, and when a club like Everton and a manager like Roberto (Martinez) who are very caring with players send someone out to a Championship club, that shows how much they think of the player."