London - Everton manager Roberto Martinez fears his side's Europa League exertions could leave them with an empty tank as they seek to end a dismal run of domestic form.
A 2-0 defeat by Stoke City in the Premier League on Wednesday left Everton in 14th place, six points above the relegation zone.
While they have reached the last 16 of the Europa League, a competition Martinez has made no secret of prioritising with a Champions League spot the carrot for the winner, they have managed only one win in their last 10 Premier League games.