Lazio sporting director Angelo Fabiani says Taty Castellanos is the future of the club.
The Argentine attacker has grown into his role this season.
Fabiani told Il Messaggero: "Regardless of any opportunities that arise, we are betting everything on Taty for next year."
Castellanos recently said: "The coach feels that he is with me and with the team, it is working well. He is working a lot with me personally, he talks to me and I feel the trust.
"This is good for us, we play well and I feel that the important thing is to do well in the championship. To g et as high as possible."
