Indeed, Forrest was discussing the Hibernian midfielder's potential arrival at Parkhead and many feel Celtic will take extra satisfaction from beating Rangers to the 23-year-old's signature.
But the Celtic winger feels any mention of the Gers has little to do with the Bhoys signing a 'really good player' from Hibernian.
When asked if the potential move had anything to do with spiting great rivals Rangers, Forrest told reporters: "I don't think it has anything to do with that.
"Celtic are always looking to bring in top players and if we do sign him, he will be looking to play and do well and that's what we want, competition for places.
"He is a really good player. He has got a lot of flair, good going forward and technically really good. He is a type of player Celtic look for and he will fit in well."
For neutrals, the Allan saga is a very intriguing one indeed. Rivals clubs have, of course, stolen players from under the noses of their opponents before - but rarely like this.
And, despite Forrest's claims, there will be many a Celtic and Rangers fan who believe the Bhoys wouldn't have taken a second look had the Gers not expressed an interest in the Hibernian midfielder.
Celtic face Inverness Caledonian Thistle in the Scottish Premiership this weekend, while Rangers travel to Alloa on Sunday, with Hibs at home to Morton on Saturday.