Could it be the end of Harmison's England career?

Fast bowler Steve Harmison is no longer a viable option for England, according to the man he replaced in the Test team, Andrew Caddick.

The 29-year-old Durham player has struggled for form since England's 2005 Ashes success and was dropped for the second Test with New Zealand in March.

Caddick told BBC Radio 5 Live: "Does he want to play domestic cricket or work hard and play international cricket?

"The standard he is playing right now, he is not viable in the side."

Interview: Somerset bowler Andrew Caddick

Harmison, who retired from one-day internationals 18 months ago, has been roundly criticised in the last few months.

606: DEBATE Will Harmison ever play for England again?

England skipper Michael Vaughan revealed he was concerned about Harmison's form during the tour of New Zealand, while Surrey captain Mark Butcher said he felt "Steve looks such a long way off".

And BBC cricket correspondent Jonathan Agnew also made it clear he felt Harmison has made it impossible for the England selectors to pick him.

Now Caddick has added his voice to the critics and continued: "He frustrates me because he took over my spot and he can be a world player.

"If he is on song, like Freddie Flintoff, then he is unbeatable. He has so much to offer but he is just not fulfilling his potential."