The clash outside the Madrid Masters players' hotel left Drouet with a broken nose.
Tomic Snr, who claims he was acting in self-defence, has since been banned from tournaments in a coaching capacity by the ATP, while he has been forbidden to enter SW19 altogether, which annoys Bernard.
"It's sad. It's a shame because to have this huge tournament here and you're competing, all of a sudden not to have someone there who's been there for your whole life is very difficult. It's not a good feeling," said Bernard Tomic.
"It's tough. But hopefully it will work out.
"I'll try to have a word with them. I know they're very strict here. We'll see what they say. It would be amazing to have my dad here watching me."