Mikel Arteta feels Arsenal have the financial strength to be able to challenge for the Premier League title next season.
AFC Bournemouth have signed Christian Atsu from Chelsea on a season-long loan deal.
Manchester United winger Nani has signed a new five-year contract with the Old Trafford outfit.
There had been speculation the Portugal international would leave United this summer.
Instead, he has signed a deal that will keep him at Old Trafford until 2018.
"I'm really pleased Nani has re-signed for the next five years," said United boss David Moyes.
"He has great ability and experience and beyond his 26 years."
Following the capture of Wilfried Zaha from Crystal Palace, it did seem United had a wide player too many given the presence of Ashley Young and Antonio Valencia in the Red Devils squad.
With a year remaining on his contract, and the transfer deadline just passed, there did appear an obvious need to secure Nani's services for an additional amount of time in order to prevent him leaving for nothing in 12 months.
Yet the length of contract does indicate Moyes has faith in a player who has struggled to consistently hit the heights during his six years at the club.
"I've been impressed with his approach to training and look forward to working with him in the coming seasons," added Moyes.