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Former Food And Drink presenter Goolden, rugby icon Moore and ex-Steps singer Tozer are all in early training for the ITV1 reality show, which returns in the New Year.
The trio will be trying to impress the producers ahead of the final lineup selection later this year.
"Producers want as many different famous faces to take part in the show as possible," a source told The Sun.
Other celebrities linked to the programme include rapper Vanilla Ice, former Strictly pro Matthew Cutler and Victoria Cross hero Johnson Beharry.
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