The real reason Gyökeres is sitting on the bench?

 By 1970s Gooner 

Victor Gyokeres has sat on the bench for Arsenal's first two games of the season. Arteta did not even bring him on at the later stages of those two matches. Isn’t that strange?

For the game against Coventry the game was done and dusted by midway of the second half and Arteta surely should have given Gyokeres minutes that he surely needs to get up to speed. 

Similarly at the Villa game Havertz was dead on his knees in the latter stages and again Gyokeres was by passed when the open spaces Villa were leaving behind would have suited him perfectly. 

And he is obviously not carrying an injury otherwise he wouldnt be on the bench. So what is going on?

A plausible explanation is that Arteta may be saving him in order to either sell him on or use him as a makeshift in a part exchange transfer for a new forward coming in (Alvarez ?)

If this is so then expect Gyokeres to come back into the reckoning once the window closes and of course if he hasn't been moved on beforehand.