In January the 44-year-old announced he would be stepping down this summer.
Xavi Hernández has reversed his decision to leave Barcelona at the end of the season after talks with the club board on Wednesday
Mbappe scored his 26th goal of the season.
Attwell has been in the spotlight for his role as VAR in denying Nottingham Forest three penalties in Sunday’s 2-0 defeat at Everton.