Rahman joined the club on Sunday from German side Augsburg on a 6-year deal and the English league champions put out a vine on Twitter of Rahman’s first day at the club.
The former Dreams FC, Greuter Furth and Asante Kotoko player was accompanied by CEO of Dreams FC, Kurt Okraku to Cobham where Rahman was interviewed and took part in his first training session with the team’s fitness coach Chris Jones.
Baba Rahman is expected to be part of the Chelsea team that travels to play against West Bromwich Albion on Sunday in the Barclays Premier League.
Chelsea are yet to win a match this season following a 2-2 at home to Swansea and a 3-0 loss away to Manchester City.
Rahman played 31 matches for Augsburg last season and racked up a total of 2669 minutes.
29 of the 31 matches were in the German Bundeliga and he recorded 4 assists in the league but picked up 4 yellow cards.
He played 6 matches (540 minutes in total) for Ghana in the 2015 African Nations Cup in Equatorial Guinea and he provided an assist for Andre Ayew in the final group match against South Africa.