However, he never developed in the way that many fans and pundits had been expecting, with a move to Chelsea proving unsuccessful.
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Speaking on the BBC show Football Focus, he said: I just felt like I had a lot to prove and I'd been missing my football, playing games.
I feel like I've gone back in time as I've not played that much over the last three or four years, as much as maybe at times I deserved.
Choosing to come to Luton, it was more the manager, I was speaking to him and he said he wanted me to just come and enjoy my football, play regularly and I've enjoyed every minute of it."