From hat-trick heroics to injury woes: How Arsenal summer sales have fared at their new clubs

The excitement of a transfer window is understandably often centred on incomings, but it was also a significant summer for sales at Arsenal too.

In Gabriel Jesus , Leandro Trossard and Gabriel Martinelli , the Gunners let players responsible for 25 goals last season leave.

Add in Christian Norgaard and that was 150 appearances made by the quartet in what was an incredibly successful season.

Here is how those players sold by Arsenal in the summer have fared so far...

Leandro Trossard Getty Leandro Trossard It has been a fairly slow start to life in Turkey for Leandro Trossard.

The Belgian joined Besiktas over the summer for a fee of just over £15million , signing a three-year contract.

Trossard scored his first goal for the club against Erzurumspor FK, sliding in to finish from about eight yards out.

He has also registered one assist for Besiktas in his seven appearances, but has missed the last two matches with a heel injury.

Trossard has joined up with the Belgium squad for the international break but he was not fit to take part in training on Monday.

Gabriel Martinelli Getty Gabriel Martinelli A £60m move to Al-Hilal comfortably made Gabriel Martinelli the biggest sale Arsenal have ever made .

In seven years with the Gunners, Martinelli registered one hat-trick. That came against Portsmouth in the FA Cup last season.

The Brazilian has already matched that tally in Saudi Arabia, taking home the match ball from a 6-0 win over Al-Tawooun despite only playing 54 minutes.

The pick of the bunch was his second, chopping inside to sit down a defender and then finishing confidently with his left foot.

Interestingly, Martinelli has been playing on the right wing for Al-Hilal, an unusual position for him. Crysencio Summerville has been preferred on the left.