"I certainly find it odd negotiations are taking place during the European Championship. That is not good for the player and disturbs concentration," the former Bayern midfielder told Die Welt on Tuesday.
The Stuttgart striker, who produced a scintillating performance in the Bundesliga last season, scoring 19 goals, has been underachieving at the EURO and even lost his place in Germany's starting line-up.
"I have always had the view that I have done something before or after a tournament, so that you don't have to be busy with it during the tournament," added Ballack.
Gomez emerged as one of the hottest German prospects over the past couple of years and has been heavily linked with the Bavarian side.
Reports suggested that Bayern have dropped their hunt following his poor performance at the EURO but sporting manager Uli Hoeness played down such claims.