I believe Football Manager 23 wonderkid Antonio Silva is ready for first team football at the beginning of the game.
This Benfica youngster, if develop properly, will become an elite player for any top flight team in the world.
Since he’s got great defend and passing attributes and I like my players to be able to perform in different positions, I would sign him and also train him to play as a midfielder for defend roles.
Antonio Silva is not a bargain, but anyway, I believe he is underpriced considering his current and potential ability.
The wonderkid just signed a new contract, so he is not interest in a permanent move at the beginning of the save, but you could sign him on loan with a future optional fee and buy him a few months later.
He already speaks basic English, so he should start playing as his best since he will find it easy to adapt to the United Kingdom.
Silva got well rounded attributes, with all relevant ones for his potential defensive roles, all of them starting at twelve.
The Man City scout report points out that he is a very consistent performer with great composure and air presence.
Conclusion:
This Portuguese wonderkid would be a great signing at a reasonable price that should be a first team player for more than a decade for any of the top teams in Europe. I would sign him, no doubts about it.