Allardyce wrote in the London Evening Standard: "Are they going to win the Premier League though? I'm not sure, particularly if they continue to play two up front, whoever they may be.
"That surprised me a little because Manuel Pellegrini comes from Spain where that formation is especially rare and is perhaps a reason why, although they beat us, they have had their problems away from home.
"As good as they undoubtedly were against us, they have shown frailties and that would concern me in terms of winning the League."
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