There will never be a neatly packaged time window scenario for Tammy Abraham. Another loan to a struggling Premier League club will be pointless and tell us absolutely nothing, and may also mean we'd have to buy at least one striker in the time between.
What we do know is that we need a striker now, and he's one that's scoring goals and on our books. He doesn't have to do much to better the output of Giroud and Morata.
He's shown what he can do in two sides which have a bit about them (at the level they're at), so there's a likelihood that he can do it for us too.
If we bring him back and play him then it's basically sink or swim - but it's the only way this will ever work - he either grabs his chance or he doesn't.
I don't particularly want to use Kane and Rashford as examples, but they're pretty pertinent. One capitalised on having two struggling strikers ahead of him (Soldado and Adebayor), impressed in cup games, then eventually forced his way into the team, the other grabbed an opportunity when he wasn't even originally down to be on the bench, and never looked back.