“I’ve had a different role playing in a back three and it has suited me a little better. It feels good to always be on the pitch.
“The season I missed games were down to groin operations – which could happen to anyone.
“The other injury was caused by me landing awkwardly after a tackle and that could happen to anyone, as well.
“It’s nice to be fit and getting 90 minutes most weeks. This is the happiest I’ve been.
“Stuart Armstrong has been brilliant, but to get Moussa Dembele and Scotty Sinclair from England helps. They have made a really big impact.
“What we achieved is something that’s probably never going to happen again in Scottish football.
“I think we will get better, but to collect that many points again might take a couple of years.”
Lustig added: “The players have done brilliantly and anyone new has to prove they want to play here.
“Everyone knows what Celtic is about – 60,000 fans and trophies. If you’re an ambitious player then come to Celtic.”
