"I know David Connolly from when he was at Watford, I gave him his debut at 16 and he had an old head on young shoulders then," says Glenn of the 26-year-old, who arrived from Wimbledon last week.
"Like true goalscorers, he lives and breathes goals and he is here to start in the team.
"It hasn't been a simple transfer; there were a lot of bridges to cross and we had to jump over three or four clubs.
"People at our club have worked very hard to make the deal happen, but when you deal with administrators it doesn't happen very quickly."
Not only did that hold up the transfer, the fact that there was so much competition for his signature also made things difficult.
"Reading, Norwich, and Nottingham Forest were certainly in there for him from this league and his record in the first division speaks for itself.
"He watched us the other night at Wycombe and we created an awful lot of chances in that game. He came on against PSV and he is still getting match fit but the most important thing is we have got his signature.
"Although there is not a lot of him physically, he is wiry and what I call a rough and tumble sort of lad. He works hard and punches more than his weight."
Glenn believes the fact that he has international experience with the Republic of Ireland, and had partnered different kinds of strikers as a result, will stand him in good stead.
"He has played a number of internationals with Robbie Keane in a striking partnership and he has played a number of games with Damian Duff.
"Last year he had a partnership with Neil Shipperley at Wimbledon so he is versatile in terms of the type of player he has played with as a striking partner.
"From what I remember of his young days at Watford he worked extremely hard on the training ground on his finishing.
"At the end of sessions he would often spend half an hour just working on it; that has got to be good for the other players.
"Hopefully that will rub off on some of them and they will want to stay out for half an hour a couple of times a week and practise their finishing too."
Of the fee for David's services - £285,000 - Glenn adds: "I think it is a reflection of the market, or on certain areas of it.
"For instance Matt Holland, who went to Charlton from Ipswich, made everyone realise that certain parts of the transfer market are not what they were a year ago.
"He looks excellent value at £750,000 and I would like to think that David Connolly will prove to be good value at around £300,000.
"At the other end of the scale we have got Chelsea spending £17m on Damian Duff and Manchester United could write a cheque any time they wanted of £20m or upwards.
"That is the sort of money I would guess they were willing to pay on Ronaldinho. It is not a reflection on all parts of the transfer market but certainly large parts of it - it is a sign of the times and will probably be like that for a number of years now."
As for Neil Mellor, whose year long loan from Liverpool was sealed on Thursday afternoon, Glenn says: "When I have seen him play he has always impressed me and first and foremost he has got a good attitude and manner as a player.
"He has a terrific work ethic and he comes from a footballing family. I remember playing against his father Ian, who now works for the PFA, when he was on the wing at Blackburn."
Neil met his team mates in the north west on Friday afternoon and Glenn says: "I am looking forward to working with him."