The topic of disharmony was raised during Wednesday's news conference but the Germany forward dismissed the claims.
Germany star Thomas Muller and team manger Oliver Bierhoff both rejected speculation of a division within the squad following their shock loss to Mexico at the World Cup.
The world champions have returned to the scene of their 2017 Confederations Cup triumph amid sweltering conditions in Sochi but are facing the heat on and off the pitch ahead of Saturday's crucial showdown with Sweden.
A 1-0 defeat to Mexico has put Germany under pressure and sparked reports of cliques in the team following the country's underwhelming Group F opener.