Arsenal have been very busy in the transfer window so far this summer, much to the delight of Gunners fans in the Transfer Tavern. 

Arsenal have made their fourth summer singing as they have announced Lucas Torreira today. The Uruguayan had a superb World Cup, where he helped guide Uruguay to the quarter-finals.

A battling midfielder, who's also great with the ball, Lucas Torreira might be the ideal partner for Granit Xhaka in midfield. The Swiss international is incredible immobile and is always caught out at the back, with Torreira next to him, he finally has someone who can cover for him.

With Torreira's arrival, it puts into doubt where Aaron Ramsey may feature for the upcoming season. The Welshman was one of the club's best players last season, and although statistically, he didn't have his best year, he was one of the few players to actually perform anywhere close to his level.

In Emery's new look midfield, the question remains as to where he might he may even play. Once he returns from his post-World Cup break, Mesut Ozil will likely take the number 10 role, while Lucas Torreira and Granit Xhaka will likely form the base of his 4-2-3-1 midfield.

With Ramsey only having one year left on his current deal, and the transfer market closing in less than a month, Arsenal must avoid having another season like they had with Alexis Sanchez last year.

Rated at £40.5 million by Transfermarkt, if contract talks don't progress quickly, Arsenal need to sell Ramsey before it's too late.