Everton bring in Oviedo
The Costa Rican has been a regular starter for FCK after joining from Deportivo Saprissa in his homeland. The 22-year-old can operate at left-back and on the left side of midfield.
Oviedo told the club's website: "I am so very happy. This is a very good opportunity for me. The last two or three days have been very stressful and tiring but I am so happy now. I am feeling good and right now everything is positive.