Manchester City boss Roberto Mancini was delighted with Sergio Aguero's goal scoring performance in victory over Porto.

Aguero, 23, took his season's tally to 20 with a quickfire strike after just 19 SECONDS last night in another man-of-the-match display - but Mancini says there is much more to come.

He said: "Sergio is another top striker but he's young and needs to improve.

"He has scored a lot of goals - he was important in this game and has been important during the season."