The confidence is high. We've been on a good run.

I hope my body holds up, I still have another 18 months left on my contract at Celtic and I have had a decent start with eight goals already in 10 games so I will just keep going.

I know there will be times when the gaffer now plays different systems with and without me in the side,

I left West Ham because of a difficult time, I left Arsenal because I wasn't in the team and once or twice I have said I would leave Celtic because I haven't been playing. I have never been a player who is not part of things.

It's a challenge for me, to go there and get that goal.

It's a sad day for me because I've always loved playing for my country and representing the Welsh people. I always feel enormous pride whenever I pull on a Wales shirt and will always cherish the memories. Now I've made this decision I'll be concentrating 100 per cent on doing the best I can for Celtic. Hopefully, this will allow me to really enjoy the final few years of my career.

There were one or two childish moments if you like, as I was growing up and maturing,

There will be a few tackles flying in, but you'd expect that in a top of the table clash. It will be a difficult game and one that we are looking forward to.

Now I have made this decision I will be concentrating my efforts 100% on doing the best I can for Celtic and hopefully this decision will allow me to really enjoy the final few years of my career.

The team was picked for the day, for this particular match.