By Katie Catherall A handful of Arsenal stars have returned to Mikel Arteta’s squad in time for their final pre-season clash with Bayer Leverkusen after impressing on the international stage at Euro 2024. Bukayo Saka, Declan Rice, William Saliba and Aaron Ramsdale have all returned to training after competing in Germany and have joined up with the rest of their squad upon their arrival back to the United Kingdom. The remainder of the Gunners have spent their summer on pre-season tour over in the United States, facing Bournemouth, Manchester United and Liverpool. Their final clash, with the Red…