One hapless fan even bought a shirt with the name of an apparently done-deal transfer emblazoned on it.
These days it is often hard to tell whether the rumor you have picked up on social media is anything more than a mischievous hoax, but fake agents are not just found on Twitter.
A more insidious breed is also playing a highly damaging role in some young footballers' careers. The problem is particularly acute in Africa, where an international scouting camp has been set up to help young players find genuine agents and avoid being exploited by chancers.
Even experienced players can be hoodwinked, as Glasgow Rangers striker Francisco Sandanza discovered to his cost earlier this year. The Spaniard was sacked after details of an overly candid phone call with a man purporting to be an agent were made public, to the anger of his employers. Buyer beware.
Footballers have feelings too
Wayne Rooney is "angry" and "confused". Gareth Bale is "horrified" and "distraught". Meanwhile Arsene Wenger apparently experiences every defeat "like a death", so who knows how the Frenchman is coping as Arsenal keep missing out on their transfer targets.
Footballers and their agents, managers and chairmen have been reaching for their thesauruses in an attempt to convey the sheer emotional turmoil that the transfer window brings.
There are safety issues for the general public too: back in 2006 Ashley Cole almost "crashed his car in disgust" when he heard Arsenal were only prepared to offer him £55,000 a week, rather than the £60,000 he had his heart set upon.
Top footballers are fragile creatures. During this unsettling period, as they are forced to endure exotic beach holidays and wonder just how much money might be on the table, one really has to feel for them.
Still, with just a matter of weeks to go until the Window closes, calm will soon be restored - at least until it reopens on January 1st, and the whole astonishing business gets underway once again.