Jonas Knudsen, Andre Dozzell, Trevoh Chalobah and Flynn Downes could all add to their international caps later today.
Knudsen, 26, is with the Denmark squad who play a friendly away against Kosovo in Pristina. The left-back will be hoping to win his seventh full cap.
The Danes play Switzerland in a European Championships qualifier in Basel on Tuesday evening.
Dozzell, Chalobah and Downes are with the England U20s, who face Poland at St George's Park in a friendly this afternoon. They subsequently take on Portugal away in Penafiel next Tuesday.
Dozzell, 19, and Chalobah, also 19, have previously won two caps at U20 level, while Downes, 20, has won one.
Meanwhile, academy youngster Kian Ronan played the full 90 minutes as Gibraltar’s U21s were beaten 1-0 in Cyprus in a European Championships qualifier yesterday. The 18-year-old, who is set to leave the Blues in the summer, was winning his second U21s cap.
Fellow academy scholar Dylan Crowe, 17, was an unused sub as England’s U18s beat Japan 4-1 in their opening game at the Sport Chain Cup in Dubai.