What a signing Pierre-Emerick Aubameyang has been for Arsenal since his arrival last January.
The Gabonese striker was one of the world's most feared strikers during his days with Borussia Dortmund and he's taken that form to north London.
Aubameyang currently leads the Premier League top scorer chart with 14 to his name after his strike in the 4-1 win over Fulham.
While he can be guilty of missing a few chances in games, there's no denying that the £56m Arsenal paid Dortmund was a steal.
Why the likes of Chelsea were not after Aubameyang looks more baffling with each passing week.
Arsenal's head of recruitment Sven Mislintat turned to Dortmund once again in the summer to bring in centre-back Sokratis Papastathopoulos.
And the two former Dortmund players combined for Arsenal's fourth goal against Fulham, with Sokratis teeing up Aubameyang.
You can watch the goal below.
Certainly not his finest strike of the season, but they all count.
And pretty much as soon as the ball hit the back of the net, Dortmund's official Twitter account decided to send a message to Arsenal in response to an FPL update on the goal.
They certainly have helped the Gunners out.
Despite Arsenal's defence struggling in 2018/19, Sokratis has proved to be an astute acquisition.
If the Greek international and Laurent Koscielny can get a prolonged run of games together, there could be a solution to Unai Emery's defensive woes.
It seems inevitable that Arsenal will have to dip into the transfer market to reinforce their backline after a host of injury issues.
Rob Holding is out for the season with a serious knee injury, while Nacho Monreal has struggled for fitness all season with a host of knocks.
The Gunners' next Premier League game is against West Ham and Emery will be hoping to have Hector Bellerin fit and available once again.