The only source I've found so far is TeamTalk, but they're claiming a quote from Wenger so I'll give them the benefit of the doubt. Ceefax have it too.

Le boss is quoted as saying last night, "He will travel. Overall I believed he needed a breather today and he got the rest and that's why he'll travel." [Add Rupe] ITV Teletext also carry the story, but their Wenger quote says, "Dennis is a fantastic player and I will ask him to travel on Wednesday. He can immediately give a ball to finish off a move."

Someone should point out to Arsene that it might be an idea to get Dennis to leave before Wednesday if he wants him fresh for the game. Or maybe he's talking about the trip back.

I'm just praying Bergkamp doesn't "do a Kanu", and go visit his folks instead!