Jota was so streaky when played for Wolves. He'd have three or four really good games then seven or eight average ones and sometimes he'd be benched. When he signed for Liverpool I wasn't really bothered, didn't think he was anything special but they identified a potential for far more consistent performance that was proven absolutely correct.
Same with Mane. He'd have five or six games in a row where he looked absolutely brilliant for Southampton, then do very little for the next six. They got that one spot on as well.
They absolutely nailed both those signings. Which is really annoying.