Having tasted relegation out of the Spanish top flight last season, it is understood that the Cameroon international is keen to move on.
He feels that playing at the highest possible level will see him enter next summer's World Cup in the best possible shape - should Cameroon qualify.
A move to England certainly appeals, with the African ace known to be an admirer of the Premier League.
However, the main sticking point at present appears to be his valuation, with Betis believed to be holding out for around €8million (£7.3m).
It is unclear as to whether Bolton or Blackburn will be willing to match that price tag, but both are tipped to make a move for Emana during the winter transfer window.