By Josh O’Brien Declan Rice has heaped praise on Arsenal youngster Ethan Nwaneri, who made just his second Premier League appearance on Sunday. The 16-year-old was brought on with 15 minutes still to play as the Gunners decimated their London rivals West Ham with a 6-0 win at the home of the Hammers. By the time Nwaneri was introduced, Arsenal had already bagged all six goals and boss Mikel Arteta deemed it a suitable time to get the teenager on the pitch for the first time since September of last year. The Hale End graduate impressed, as despite his age Nwaneri was more than comfortable when …