Declan Rice and Bukayo Saka have both sent messages to Ethan Nwaneri on Instagram after Arsenal thrashed West Ham yesterday. The Gunners were in fine form at the London Stadium on Sunday afternoon as they hit West Ham for six. Declan Rice’s stunning effort in the 67th minute rounded off a dazzling display from Arsenal. Bukayo Saka also bagged a brace while Leandro Trossard, William Saliba and Gabriel Magalhaes got on the scoresheet. As Arsenal cruised towards a comfortable victory, it gave Mikel Arteta the opportunity to hand Ethan Nwaneri some minutes. The 16-year-old replaced Gabriel Martine…