If the object is to groom a possible replacement for Jones in 25, then I hope he's not looking to depend on a free agent RB; that's an especially bad idea this year. It'd be very poor asset management, especially when we have so many draft picks. A replacement for Jones would be a pretty expensive free agent.
But if we're just going to replace Dillonthis season, there seem to be roughly 8 (certainly 5 or 6) backs in the draft who we could bring in now, and at the end of the season we assess the outlook for Jones and plan accordingly. Maybe at the end of the year, we find that the FA would replace Jones in our system, and we draft another RB to play the Dillon role.