This is a surprise from Chelsea, many don't know about this striker. I think it's natural because he doesn't play in Europe, reportedly Chelsea had to spend 20 million to recruit him. If he gets minutes to play in Chelsea main squad, it is possible that David Washington can develop even better. But to become the main striker, I think Pochettino will still entrust it to other players.
Pochettino seems to be more interested in players from Latin America, indeed there is no need to doubt the talent of young players from there, especially Brazil and Argentina.
Brazil is hiding young talent so it is not surprising that the potential players Pochettino is targeting are quite difficult to predict. Chelsea, who are now optimistic, certainly bode well for next season, all that remains is Todd Boehly full support in realizing Pochettino's wishes. Because learning from the case the Chelsea coach often disagreed with Todd and then was removed. So now it's better for Todd to leave Chelsea in good hands, let Pochettino do his thing, don't be confused by policies that end up not compatible with each other.