Arsenal manager Mikel Arteta has hinted the club could make further signings despite already spending more than £200m this summer.
Arsenal have invested heavily in their squad to try to ensure that last season's title challenge was not just a one-off.
The Gunners first signed Kai Havertz in a £65m move from London rivals Chelsea, with the Germany international making his debut for his new club in their 1-1 draw with Nurnberg on Thursday.
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Arsenal followed that up with the £38m signing of Jurrien Timber from Ajax before finally completing a club-record £105m deal for West Ham captain Declan Rice, making him the most expensive British player in history.
Havertz, Timber and Rice were all named in Arsenal's 29-man squad for their pre-season tour of the United States.
Arsenal face an MLS All-Star XI in Washington DC on Thursday before taking on Manchester United in another pre-season friendly in New Jersey on Saturday.
Arteta refuses to rule out further signings
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Arsenal have been linked with several other targets including Southampton midfielder Romeo Lavia and Bayer Leverkusen winger Moussa Diaby and Arteta has hinted there could be further signings this summer.
"Let's see. There is a lot of time still in the market and expectations with some of our players, so we will have to see how things develop in the next couple of weeks," Arteta told Sky Sports News.
"We will be alert. There is still time to do things.
"There is still time for exits obviously, so I am sure things will move."
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When asked how Rice had settled into the squad after his move from West Ham, Arteta had a positive update for supporters.
"You all know about his leadership, his personality and the experience that he already has at 24," added the Spaniard.
"It's gone very smooth. I think he is already close with a few of the boys, he knew a few of them from the England camp, so yeah - he seems very happy."
One player linked with a move away from Arsenal this summer is striker Folarin Balogun.
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The United States international returned to Arsenal after a successful loan spell at Reims last season but faces tough competition for places, with Gabriel Jesus and Eddie Nketiah ahead of him in the pecking order.
The Evening Standard claim Inter Milan are interested in signing Balogun but are not prepared to meet Arsenal's £50m asking price for the forward and will seek to pay a lower fee.
Arteta is seemingly reluctant to lose Balogun this summer and will give him a chance to impress in pre-season.
"He's done incredibly well," added Arteta, when asked about his plans for the 22-year-old.
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"Now we have to think what is best to do. We want to see him, we want to experience him in the next few games.
"He played the last game against Nurnberg and he will do again in the next few games. Then we will make the best decision."
Topics: Arsenal, Transfers, Premier League, Mikel Arteta