According to the Telegraph, winger Serge Gnabry will be recalled from loan by Arsenal, cutting his season at West Bromwich Albion short. He's only played 12 minutes in the Premier League and hasn't seen game time in any competition since September, rendering the half-season at the Hawthorns more or less pointless.
Although Gnabry would likely at least make the Arsenal bench at the moment, with Joel Campbell getting regular playing time and Alex Iwobi and Jeff Reine-Adelaide in the squad, he will probably go out on loan. Several Championship sides are showing interest, including fourth-place Brighton, and after four months of mostly treading water it'll be good for the player's development to get regular playing time again. It would definitely be preferable if it was Premier League playing time, but honestly I'm not sure it would be worse to be part of a promotion battle than to have to spend five months at Aston Villa right now.
In the fall, Arsène Wenger said he wouldn't be recalling Gnabry, that "it’s good that he faces this type of challenge, to change Tony Pulis round, and I hope he is putting the effort in." On the other hand, Tony Pulis is an orc, and we need somewhere to loan Mathieu Debuchy, so since only one player from a Premier League team can be loaned to each Premier League team here comes Lt. Serge.
EDIT: By the way, since Gnabry played for West Brom, if he plays for Arsenal – even in the U21 team – he can't leave. From a BBC article on Hatem Ben Arfa:
The delay centred around article 5.3 of Fifa's regulations on the status and transfer of players, which states: "Players may be registered with a maximum of three clubs during one season.
"During this period, the player is only eligible to play official matches for two clubs."
...It said that contrary to the position of the Football Association in England, Fifa had classed the U21 match for Newcastle United as "official".
So basically he's here or he's not, but it can't be both.