Unai Emery's rebuild at Arsenal has got off to a great start as the club have addressed multiple positions that were in dire need of help.

With the additions of Stephan Lichtsteiner, Bernd Leno, Sokratis Papastathopoulos, Lucas Torreira and Matteo Guendouzi, Arsenal have brought in five players that will instantly improve the team - especially in defence.

With those players coming in, Arsenal now need to sell in order to bring in any more signings in. Furthermore, there are some players who although won't command much of a transfer fee, their careers at the club are basically over.

It may be brutal but there's no need to keep players who really have no long-term future at the club and indeed, won't add much to the squad over the course of next season.

With that in mind, here are three players who Emery should sell before the transfer window closes...

The talented Frenchman attracted rave reviews from the Arsenal faithful when he broke onto the scene in the Emirates Cup three years ago.

Since then, the 17-year-old has only shown glimpses of his precocious talent. A tall, elegant playmaker, Reine-Adelaide has struggled with injuries and has only made a handful of appearances for Arsenal in the League and FA Cups.

This year he has featured in Arsenal's initial pre-season games but has been left out of the club's pre-season tour squad of Singapore. With only a year left, it's time for Arsenal to give up on the Reine-Adelaide experiment.

What might surprise some Arsenal fans is that the Costa Rican international has spent seven years at Arsenal but has been sent out on loan to five different teams during his career.

At times, the winger could've been an asset to Arsenal but it seems he was never in Arsene Wenger's plans for the squad and after being left at home for Arsenal's tour of Singapore, it seems Unai Emery doesn't fancy him either.

With Lucas Perez, Alex Iwobi, Aubameyang and Mkhitaryan are ahead of him, Campbell's chances of playing are looking slim.

Much like Jeff Reine-Adelaide, Bielik made a great impression on the Arsenal fans when he broke onto the scene but has since struggled to make the step to the first-team.

Since he joined the club, Bielik has been one of the better players in the academy but has never been given a full chance in the first-team. The Polish international spent the second half of the 2016/17 season on loan with Birmingham. He was sent on loan to Walsall last season following an injury but failed to make an appearance.

It looks like his Arsenal career is over.