The Costa Rican winger showed glimpses of his quality in his first season in English football, and now his manager wants him to become a key player at Craven Cottage
Ruiz moved to Craven Cottage from Twente last summer for 10 million pounds and scored twice in 30 appearances before his season was cut short by a broken foot.
But after scoring in Fulham's 3-0 preseason friendly win over Wycombe, Jol feels the Costa Rican can show why the Cottagers splashed out to bring him to the club and become a key player for the team.
"It was good to see Bryan Ruiz back to full fitness," Jol told reporters after the Wycombe game. "He showed some very good touches and I thought he was the best man on the pitch."
Jol said Ruiz needed six months to adapt to English soccer but he misse nearly half a year with the injury.
"Then he had a horrific injury and was out for four or five months, so I was very happy to see him back," Jol said.