Moore joked that the window cleaner was trying to get a transfer scoop, but if he had stuck around a bit long he may well have after Alex Oxlade-Chamberlain signed for the Reds, becoming the first major deal of deadline day.
West Brom did not reveal how much they paid for the 27-year-old, but British media reports put the fee at around £7m.
Still, this is a player that Arsenal were desperate to keep (to the tune of £180,000 per week), and that defending champs Chelsea were willing to go over odds to sign him (to the tune of £40 million).
New Liverpool winger Alex Oxlade-Chamberlain says his "ongoing development" is the reason why he chose to leave Arsenal.
Upon signing for Liverpool, Oxlade-Chamberlain said: "I'm now away with England, so I'm at St George's Park".
Alex Oxlade-Chamberlain has signed for Liverpool.
"I know my choice might come as a surprise to many", he said in a personal statement on Twitter, ". but I feel that this move is right for the next stage in my ongoing development".
Oxlade-Chamberlain has demonstrated exactly how keen he was to depart Arsenal this summer.
Six years into his Arsenal career, Oxlade-Chamberlain still didn't have a well-defined position and rarely had a regular starting job until Wenger discovered - nearly by accident - that he was quite good as a right wing-back.
Turning down the Premier League champions, Oxlade-Chamberlain reiterated his desire to work under Klopp on Merseyside. "In the past year, he has made huge progress and I want him to stay here for a long time".
Oxlade-Chamberlain becomes Liverpool's fifth signing of the summer after Dominic Solanke, Mohamed Salah, Andrew Robertson and Naby Keïta - who will join the club from RB Leipzig in a club-record deal in July 2018.
The English squad announced the move for the Arsenal star on Thursday.
Manchester City have splurged the most so far, shelling out more than £200m including more than £50m to prise defender Kyle Walker away from Tottenham.