I really don't think that's the case.
I suspect that if Janssen hadn't been playing that night the deal wouldn't have got as far as it did, because he would have had the chance to say "Brighton? **** off!" earlier than he did.
It was the same last year with Championship fixtures played on 31st January, a Tuesday.
We were scheduled to play Huddersfield that night, but our game was moved to Thursday, meaning we weren't otherwise distracted on the big day.