Arsenal have made an approach to sign Amadou Onana from Everton, according to Liverpool Echo. Gunners boss, Mikel Arteta, is looking to add a new central midfielder to his squad this summer. This follows the exit of Mohamed Elneny, while Thomas Partey continues to be linked with a move away. Onana is also attracting interest from other Premier League clubs including Chelsea and Manchester United. However, it is believed Arsenal are the first team to make a move this month, as they have made an enquiry to Everton about Onana’s availability. The report claims that Everton, who are under pressure…