Goals from Mikael Lustig, Georgios Samaras and James Forrest gave the Hoops a comfortable win over the part-time Irish side at Solitude and ensured there is little chance of an upset when the part-time Irish side travel to Parkhead for next Tuesday's return.
The Hoops boss claimed striker Gary Hooper's mooted move to QPR is not yet complete but it is believed some money from the sale of midfielder Victor Wanyama to Southampton, reported to be £12.5million, will be available.
He said: "Talks are still ongoing between Gary and his representatives but no bid has been accepted by us yet.
"Hopefully we've negotiated the tie but we need new bodies in for the next round and we're going to do that.
"We're actively looking at strengthening the squad as there's money available from the Wanyama transfer.
"I'd like someone in before the second leg next week if I can so we can bed them in as quickly as possible.
"If we could get one in early next week, I'd be delighted but at the moment we aren't close to anything."