If he changes his mind, he can switch over to his own benefits at any time.

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He said the advert was used before switch over and was not used again following complaints.

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In June he held talks with Celtic over a possible switch to the Scottish side.

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He had noticed that, when a heavy train passes over, a well-greased switch rail has some play, as if swimming in the grease.

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"He's got great form as a junior over 400m and should he at some stage in the next four or five years decide to switch up then he'll be a real threat, " said Costello.

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