It's obviously early days as the 21-year-old only arrived at Spurs Lodge on Monday, but the frontman with express pace appeared to have no shortage of desire to add himself to Glenn's shopping list.
He entered play on 57 minutes and galvanised the team as an attacking force after a bright start to the half from Palace. He won the penalty for Darren Anderton to add a second to Steffen Iversen's first half strike, dispatched a pinpoint cross for Simon Davies to nod home and teed up Iversen for a thumping fourth to complete the rout.
"Young Qu Bo wants to be called Kevin - don't ask me why!" laughed Glenn. "But Qu Bo (pronounced Tu Bo) - I think we've got that one off to a tee now.
"He's come over and adjusted very well, to be fair to him. He came in bubbly and smiley from the first day and, what he has done, is get the respect of the players in training very quickly.
"You saw tonight, they gave him lots of the ball and for Simon Davies' goal it was a fantastic cross - right on the button."
Glenn did indicate though, that there will be no snap decisions on taking Qu Bo on a permanent basis.
"He's 21 years of age and I'm sure we'll be looking closer at him.
"We saw him in the World Cup, it's a little bit complicated but he's come over and equipped himself very well.
"A pre-season game is one thing, a Premiership game is a big, big, big difference and he's got to show us what he can do against better opposition."
Glenn was also delighted with the impact of fellow substitute Jonathan Blondel, who also arrived on Monday following his capture from Royal Excelsior Mouscron. He added Diego Bortolozzo to the list of exciting youngsters who have come to the club with the aim of staying longer term.
"Jonathan we've seen for a long time and monitored him for a long time. He's one for the future. He's played something like 20 games in the Belgian league.
"He's slight, he's maybe got to adjust to English football and the Premiership - it will be test.
"He's certainly got talent and again, with the experienced professionals we've got at the club, he's earned their respect instantly. They know they can give him the ball and he'll protect it and keep it for us.
"We've got young Diego, the Brazilian lad with us as well. He didn't play tonight, but he'll shape up and it's interesting to see these youngsters that we're attracting to the club.
"This bodes well for us. Look at Simon Davies tonight from 12 months ago, he's grown in stature, in strength physically and in belief - and he knows he's got a manager that believes in him."
By Richard Hubbard at Selhurst Park
Trialist Qu Bo certainly made an impression in his first outing for the club at Crystal Palace as the Chinese striker livened the tempo of the second half and inspired the team to add another three goals to the first half tally.