The Chelsea winger, who Blues have lodged a bid for, has returned to training with Morten Olsen's squad following the death of his mother two weeks ago and is in consideration for a starting role when the Danes take on Bulgaria on Friday.
Blues remain confident of luring Gronkjaer to St Andrews once the finals in Portugal are complete although they are facing strong competition from Uefa Cup winners Valencia for the 26-year-olds signature, the Spanish side now being managed by Gronkjaers former boss at Chelsea, Claudio Ranieri.