The Barcelona attacker has wished his fellow La Masia graduate well in his adventure in English football.
The Spain international ended months of speculation over his future by opting to leave his boyhood club this week, penning a deal to move to the Premier League champions.
Pedro had fallen behind deadly trio Messi, Luis Suarez and Neymar in the Blaugrana pecking order and had to make do with limited opportunities last season as Barcelona romped to a momentous treble success.
The World Cup winner is clearly eager to play regularly and as such has had to leave the Catalan powerhouses for a new challenge.
Both Messi and Pedro are graduates from the La Masia youth academy and have featured together for the historic club over many years.
The new Blues signing showed his worth by scoring the winner in the UEFA Super Cup earlier this month, coming off the bench to net an extra-time decider against Sevilla in an enthralling 5-4 clash in Tblisi.
Pedro is in line to make his Chelsea debut this weekend against West Brom and will join fellow former Barcelona star Cesc Fabregas in Jose Mourinho’s squad.