The club decided to trust young players

The club is going to provide more playing time for young attacking players. In particular, 19-year-old midfielder Cole Palmer can get playing practice in the main team. Torres has played for City since August 2020, having scored three times in 7 appearances for the club this season and provided one assist.
Ferran – Could be a great option for clip depth and could grow into a big player in Man City. Considering the price and the player’s strengths and weaknesses, this looks like a great transfer for Manchester City. Torres had the right set of traits to add a lot to Guardiola. And it was very inexpensive. That is, even in a negative scenario (if for some reason it does not start playing), it is a liquid asset, the costs of which can be recouped.
“I am very happy to join this great club. Hopefully I will continue to grow as a footballer and as a person and help Barcelona be what it is – one of the best clubs in the world. I am very happy to be here.” – Torres said.
“This is a step towards my further growth as a player and as a person, with an ideal coach and a club that are happy about my transfer. Now I am looking forward to the opportunity to be with the team “.
Barcelona announced Torres’ transfer on 28 December. He signed a contract until 2027. The amount of the transfer is estimated at 55 million euros, and Man City can receive another 10 million in the form of bonuses.

Source: https://www.skysports.com/football/news/11833/12504257/ferran-torres-transfer-barcelona-complete-signing-of-manchester-city-forward