Sometimes players simply do not know when they have a good thing and should Gordon see his head turned by the Blues you have to worry that would be the case for him.
Had he been playing for a lower league club or one that did not have the chance of winning trophies or playing European football, you could understand it.
Of course there is nothing to suggest that Gordon will actually up and jump ship to England despite the links with the Champions elect. At 32 years of age, you have to think Gordon has it pretty sorted by being at Celtic and has a real chance to be a massive part of something good under Ronny Deila.