It was duly reported by those assembled:
Wenger says he confident of doing something today and estimates it 80:20— Gary Jacob (@garyjacob) January 31, 2014
What I would say is that - playing Wenger transfer bingo - he'd never say "80 per cent" likely unless he was 100 per cent sure of a signing.— John Cross (@johncrossmirror) January 31, 2014
Such was the optimism of a new arrival that even Arsenal relayed the quotes on Twitter:
But all of a sudden they disappeared.
Presumably the reason was simply to temper any expectations from Gunners fans as the clock ticks down, but this is transfer deadline day, and if there's ever a time for a conspiracy theory to develop from a missing tweet, then this is it.
At the time of writing, the speculation seemed to have settled on midfielder Kim Kallstrom being the arrival to whom Wenger was referring.