Last season, he was on target in both games against the Belarusian champion when he played for Arsenal in Europe's second tier competition.
"We know it will be extremely tough against a top team but I think now we need to be going to these places and getting three points".
Sarri's first impressions were not quite so glowing. I think we didn't play very well, I didn't like the first half because we moved the ball only horizontally and slowly, so it was hard to be risky.
"At the beginning he was in trouble", the 59-year-old former Napoli boss said.
But Barkley, after a start which Sarri describes as far from flawless, has worked hard and made himself a real contender - an effort which has also seen him recalled by England. 'Then he started to improve in every training, in every match. And while Sarri admits his star won't play 90 minutes, there is no risk attached to him being involved. "I want to choose for another way, not for this kind of thinking".
"In the last match he played only for 30 minutes".
Barkley anticipates facing some hostility from Everton's visiting supporters, after moving on following 13 years at Goodison Park.
"I think they can play together, but I think Loftus-Cheek has got to play one of the wider roles if Barkley plays, where your [Eden] Hazards, Pedros and Willians are", he added. "I'm looking forward to catching up with some of the staff there who I used to get on really well with".
Barkley played the entire 90 minutes as Chelsea took their unbeaten run this season to 17 games by reaching the last 32 of the Europa League with a 1-0 win at BATE Borisov on Thursday. Kante did not feature.
Cesc Fabregas is doubtful because of illness, while Ruben Loftus-Cheek's back problem will be assessed.