The 17-year-old forward was pictured in practice with the Gunners.
The former Bayern Munich midfielder appears to be comfortably settling into life at Manchester United.
The Liverpool playmaker is barely being mentioned by fans and pundits ahead of the new season.
Manchester United stars posed with fans in Seattle.
Younes Kaboul has left Tottenham Hotspur for Sunderland.
Victor Valdes seems to have been taken off guard by Manchester United boss Louis van Gaal's comments.
The impressively named Ronaldo Vieira featured for the Leeds first team in pre-season.
Here's our player ratings for West Ham United after a narrow 1-0 win over Maltese minnows Birkirkara in the Europa League second qualifying round.
The 20-year old completed his £49 million pound switch from Liverpool this week.
The 29-year-old centre back was named Mauricio Pochettino's Tottenham captain at the start of last season, but on Thursday moved to the Stadium of Light.
The latest Queens Park Rangers transfer news, views and rumours.
Tom Ince turned down Serie A side Inter for Hull City but he may be regretting that decision after being loaned out to Nottingham Forest.
We analyse how Ronald Koeman has helped Southampton improve after losing Mauricio Pochettino this summer.