Kevin Pietersen believes that incoming England and Wales Cricket Board chairman Colin Graves will make the changes needed to revitalise the England team following a poor showing at the World Cup.

England's one-day side were knocked out of the tournament in the group stages after a 15-run defeat to Bangladesh on Monday.

The defeat raised questions over the decision to axe Pietersen from the England set-up 14 months ago, but the batsman says that he is optimistic over the appointment of Graves, who will take up his post in May.

"The encouraging news is that the new boss has the vision to look to open up a window to hopefully give players a better chance," he wrote on Twitter.

"I really do think changes are going to be made and positive things are going to start to happen for the good of English cricket."

Graves has hinted that Pietersen could return to the international fold if he plays country cricket in England.