Arsenal and Manchester United have landed a boost for their pursuits of a £60m star after he admitted it is ‘nice’ to be linked with a transfer to the Premier League giants. The summer sales are now officially underway after the Premier League window opened for business on June 14. Arsenal and Manchester United are both likely to be active throughout the off-season, too, as Mikel Arteta and Erik ten Hag strive to improve their respective sides. Gunners chiefs are keen to give Arteta fresh weaponry after falling just two points short of a first top-flight title in 20 years. Arsenal also failed …