Comment and Analysis
The Ivorian forward had already revealed that he was close to joining the Serie A side but the transfer has now been officially confirmed.
The US U-20 attacker scored in his return to Tijuana's U-20s, benefitting from a familiar location and position.
Money-spinning friendlies in the Middle East help develop supporter bases and keep the sponsors happy, but they can derail a club’s season on the pitch.
The champions have not won in the league without the midfielder this term and must get David Silva more involved in Saturday's showdown at Chelsea than he was against the Gunners