JEDDAH, Saudi Arabia: Roberto Firmino signed for Al-Ahli on Tuesday to become the latest star to head to Saudi Arabia’s lucrative Pro League. The Brazil striker left Liverpool at the end of last season after a trophy-filled eight-year spell, which saw him lift every major club title. Now, at the age of 31, he will join a host of other top soccer stars in Saudi Arabia as the oil-rich kingdom embarks on a spectacular attempt to raise the profile of its league. “I always played for big teams, now I am in Al-Ahli,” Firmino said in a video posted on Twitter by the club to announce his signing.