Sony is pretty shameless and at the end of their day, they know it's business. If they still think including Andrew Garfield as the voice of a Spider-Man can be a major draw, they will sign him up.
But really, I actually think Emma Stone may be the bigger draw from that iteration of the franchise, especially if they bring her aboard to voice Spider-Gwen. I have also seen fans clamoring for Tobey Maguire and Kirsten Dunst to voice the Renew Your Vows versions of Spider-Parents, and that would be cool too (even if Kirsten has made her own sassy comments about Sony's greedy need to keep rebooting Spider-Man till the end of time, I think Sony could still approach her, it's up to her if she wants to take it).