The winger is returning from a serious knee injury and has yet to regain his top form.
And Leighton Baines says Everton need to keep giving Bolasie game time if they want to see him return to his best.
The 28-year-old spent over a year on the sidelines after going down to a knee injury against Manchester United in December 2016, making his return on Boxing Day 2017 against West Brom.
Bolasie scored his first goal since returning to fitness against Manchester City at the end of March, making another step towards being at his full potential once more.
And Everton team-mate Baines believes that the winger needs to be afforded time and patience to get back in to his stride, writes the Liverpool Echo.
“Yannick is another player who has been disrupted with his injures and such a long layoff,” Baines told evertonfc.com.
“When you have that type of injury it is always going to take you a bit of time to get back up and running and get your legs back under you.
“He has started to do that and is someone I know, that if I give him the ball, I just have to support him from behind. He is good to play with. He is always a threat for us and keeps the opposition full-backs busy.
“Yes (Bolasie’s confidence is rising). He has had a few good performances, set up a few goals and scored as well.
“That will give him confidence and he has started to show that on the pitch with the positivity in his play. That is the type of player he is. He is someone you have to allow to go and express himself. If you tried to stifle him it would take so much away from his game, so you just have to let him go and play.”