The international window has seen a number of Blades feature for their countries, including five at senior level.
Ollie Norwood, who impressed in defeat against Bosnia & Herzegovina on Saturday, played the second-half of Northern Ireland's 3-0 victory over Israel on Tuesday, with Conor Washington also coming off the bench.
For the Republic of Ireland, Enda Stevens and John Egan both played 90 minutes for Martin O'Neill's side, as they were denied victory by a late equaliser in Poland.
Dean Henderson was once again preferred to Angus Gunn, as England U21s came from behind to win 2-1 in Latvia, a win that put them on the brink of qualification to the forthcoming Euros.
For Wales, Ben Woodburn made a cameo appearance off the bench for Ryan Giggs's side, who lost 2-0 in Denmark, with Cristian Eriksen bagging a brace. At U21 level, Rhys Norrington-Davies featured as the Welsh were defeated at home to Portugal.
Meanwhile, Jordan Doherty caught the eye for the Republic of Ireland U19s, with him claiming an assist in a 2-0 victory over their Wales counterparts.
Finally, David Parkhouse was originally named in the Northern Ireland U21 squad, as Ian Barraclough's side notched an impressive 2-1 over Spain.