Raheem Sterling believes Sergio Aguero is the equal to his former teammate Luis Suarez.
Sterling played some of his best football with Suarez and he now joins Aguero at Manchester City.
"They are two players in the same category, both world-class players and can score from any moment in the game," Sterling told City's official website. "I am really looking forward to working with him as I did with Luis."
Sterling didn't win any trophies while at Liverpool.
"They have got world-class players and players I think are capable of winning things year in, year out. The team and the players Man City have got, they should be challenging for the title every year. This year should be no different."