Former Arsenal striker John Hartson thinks his old club may pay the price for not strengthening sufficiently in the January transfer window.
"I think they've had a fantastic season up to now and a lot of people, even the guys at Arsenal, if you ask the players they're probably slightly surprised they're top of the league right now.
"They've been outstanding. The form of Ramsey earlier on and Giroud's done really well for them, and Ozil made a great impact when he arrived at the club initially.
"It's very difficult to say now who is going to be champions, but I think it's common knowledge whoever can put a good run together and get through all these tough fixtures they've got will be the champions."
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