Internationals Pione Sisto, Robert Mazan and Stanislav Lobotka returned to train on Tuesday at A Madroa after finishing their international participation.
Sisto started with Denmark against Wales, a game that ended with a Danish win by two-nil and in which the sky-blue played the entire first half.
Mazán was a starter and played the ninety minutes with Slovakia in the 3-0 win over Denmark, a match in which Lobotka was a substitute. In the next match, losing to Ukraine (0-1), Lobotka played the whole match and Mazán remained on the bench.