It is not the only factor that makes Ivan Toney is impressive. As far as I know he often made many goals in EPL. Even if he didn't become the top scorer but his name was in the list of most productive strikers in EPL. Yes, he has a great ability in shooting, he will easily score many goals in SPL if Al Ahli midfielders can support him with good assists. Al Ahli also has good wingers that can support him as well.

Ivan Toney seems fit to play together with Firmino. Firmino can be an attacking midfielder, he is very experienced and has good ability in delivering assists. In theory, Toney-Firmino will be good duo for Al Ahli attackers. I'm very sure Firmino won't be too obssesed to score goals as many as possible. He must be ready to play as an attacking midfielder.