The 20-year-old, who signed for the Blues last August for £8m from Hajduk Split but who has found himself out of the first-team squad at Goodison Park under Sam Allardyce, found the net twice for his country in their 4-0 win over Moldova.
Meanwhile, Dominic Calvert-Lewin, Tom Davies and Jonjoe Kenny started England U21s in their European Championships qualifier against Ukraine, with Ademola Lookman coming on as a second-half substitute.
Calvert-Lewin scored the only goal of the first half on his return to Bramall Lane, home of Sheffield United from whom he joined Everton in 2016. The striker sprinted onto an excellent through-ball and prodded it expertly past the on-rushing goalkeeper.
In the second half, Kenny helped preserve England's lead with a brilliant goal-line clearance but Mykola Shaparenko's header looked to have earned the Ukrainians a draw in the 83rd minute.
Dominic Solanke scored what proved to be the winner two minutes from the end of the 90, however, to secure victory for England.