- Jannik Vestergaard was involved in Denmark's 2-0 loss to Northern Ireland on Monday
- Victor Kristiansen, on loan at Bologna, and goalkeeper Mads Hermansen were also in the squad
- Young striker Chris Popov featured for Wales Under-21s in a defeat by Denmark Under-21s
- Tuesday could see another five Leicester City players involved in international action
Leicester City centre-back Vestergaard was introduced in the 61st minute at Windsor Park, while loanee Victor Kristiansen - who's spending the season at Italian outfit Bologna - also started for De Rød-Hvide on Monday evening.
Foxes goalkeeper Mads Hermansen, on the other hand, was an unused substitute as Denmark suffered only their second reverse of the qualifying phase. Isaac Price and Dion Charles were the goalscorers for the home side.
Despite this set-back, Kasper Hjulmand's Danes will nonetheless be there in Germany next summer for the European Championships finals after winning seven of their 10 qualifying fixtures in Group H.
Elsewhere on Monday, young forward Chris Popov, a member of the Club's Development Squad, featured from the bench as Wales Under-21s were beaten 2-1 by Denmark Under-21s at Rodney Parade in Newport.
Tobias Bech and Oliver Provstgaard got the goals for the visitors, with Cian Ty Ashford netting in second-half added time. Popov was introduced at the interval, meanwhile, playing the full second 45 minutes of the clash.
Wales' youngsters are currently second in Group I of UEFA U21 EURO 2025 qualifying, with eight points from five games, with leaders Denmark - on the same tally - holding a game in hand.
Tuesday is the final day of Leicester City involvement on the international scene, with Harry Souttar (Australia), Abdul Fatawu (Ghana), Cesare Casadei (Italy U21s), Patson Daka (Zambia) and Danny Ward (Wales) in line for action.