LONDON • Phil Jagielka has warned that Everton could face upheaval beyond the manager's position this summer, with Roberto Martinez's successor having to deal with an exodus of established players.

The Everton captain, a surprise omission from England's provisional 26-man Euro 2016 squad, believes the number of first-team players leaving Goodison Park could reach double figures, and the next manager may need experience of handling a squad overhaul.

Tim Howard brought his 10-year career with Everton to a close on Sunday, while club stalwarts Leon Osman, Tony Hibbert, Steven Pienaar and Darron Gibson are out of contract this summer. Romelu Lukaku and John Stones could also be involved in transfers.

Jagielka said: "There is going to be a lot of change in the playing squad. I am not sure the squad is going to be big enough for the start of next season with the people who are leaving.

"It is a case of the club deciding what sort of squad and formula they want to go for both on the pitch and off the pitch. That will determine what manager they want.

"I am not sure exactly what will go on but there could be double figures leaving, which is a lot. We are talking about established first- team players. It is going to be a big change of personnel and that will play a big part in who will get the chance to manage the club."

Ronald Koeman, Everton's preferred candidate to replace Martinez, inherited a similar problem when he arrived at Southampton in 2014 but performed admirably by placing the Saints among the Premier League's top seven in each of his two seasons at the club.

Jagielka has arguably paid the price for the team's defensive record this season with his England place, despite being the side's best defender, and admits results dictated Martinez's departure.

"The results were the results. In the end, that is what cost the manager his job," he said.

"The people who make the decisions decided that was the case. It is easy to say it has been a season of underachievement, but we have had two great Cup runs.

"Our league form hasn't been as good as it should have been but things haven't been as bad as people have made out. Football is a results business and unfortunately for us in the league it is not what we have wanted."

THE GUARDIAN