Arsene Wenger may regret selling Gabriel now.
Shkodran Mustafi has been ruled out for up to six weeks with hamstring injury.
The Gunners centre-back limped off while on international duty for Germany and is expected to miss at least the next eight games.
Mustafi looked in considerable discomfort as he left the pitch in the 37th minute during Joachim Low’s side 5-1 win over Azerbaijan.
The injury potentially leaves Wenger without two first-choice defenders as doubts remain over Laurent Koscielny’s fitness.
Arsenal are away to 8th placed Watford on Saturday and may field a back three of Per Mertesacker, Nacho Monreal and Rob Holding.
While Mustafi’s injury is bad news for Gunners fans it’s positively disastrous for a few thousand Dream Team fantasy football managers.
The 25-year-old has picked up 33 points so far this season, putting him in the same bracket as Eric Bailly and Tony Alderweireld.
For those who have Mustafi in their team and still have a transfer to spare, we suggest you bring in some new personnel as soon as possible.
The Gunners have a favourable run of fixtures until they play Man City away and Spurs at home either side of the next international break in mid-November.
Monreal may be worth considering as a temporary replacement for his crocked team-mate.
The Spaniard has outscored Jan Vertonghen, Toby Alderweireld and Eric Bailly in Dream Team so far this season, accumulating 40 points.
And he only cost £4.1m currently, making him considerably cheaper than those high-profile options he’s outscoring.
Just a suggestion.
Philippe Coutinho or Henrikh Mkhitaryan? Why not both?
That’s the beauty of Dream Team Weekender – there are no budget limitations so you can pick any player available from this weekend’s fixtures.
That means you don’t have to worry about only picking one star playmaker when Liverpool and Manchester United lock horns in the tastiest game of the season so far on Saturday.
Weekender is the best new fantasy football game around and it’s absolutely free to enter.
Just select seven players from across the Saturday and Sunday Premier League fixtures for your chance to bag that increased £20k prize this weekend.
Flopped so far this season? It doesn’t matter, as Weekender allows you to start afresh every single weekend. Let the games begin – sign up to play here!