World football journalist, Fabrizio Romano reported that Neymar agreed to return to his childhood club (Santos). A verbal agreement has been reached between all parties involved in the transfer, talks set to continue next week for a more formal opportunity. He has already said yes to moving to the club that made his name, if this transfer happens, maybe Neymar will end his career there.
Source: FabrizioRomano
I don't know how authentic this report is but is truly what's contained in it is as genuine as it's reported, I think the Brazilian is just going back from where he started to show his appreciation for all the love and support he received from the club management and fans during his stay there as well as when he left the club to go pursue his football career abroad. Neymar Jr return to Santos I don't think will have any significant effect on the team and my reason of saying that is simply because he's not that fit to perform at the top of his game anymore. It's more of a ceremonial return to his club boyhood club than a return to come help the club win trophies again.Source: FabrizioRomano