Former Socceroo goalkeeper Mark Bosnich will be charged with failing a drugs test, British newspaper The Sun says.

Bosnich, 30, has been suspended without pay by London club Chelsea since allegedly testing positive to cocaine early last month.

The Football Association is expected to confirm that the results of the second B sample, carried out in Barcelona at Bosnich's request, also revealed traces of cocaine.

If the report is correct, Bosnich faces a one-year worldwide ban from soccer and immediate sacking from his STG40,000 ($A113,600) a week contract at Chelsea.

The club suspended him without pay after he checked into a private medical clinic suffering depression in mid-November, arguing he was in breach of club rules once he failed the initial drugs test.

Chelsea chairman Ken Bates broke his silence on the case, accusing the FA of dragging its feet after it took more than five weeks to check the B sample, a procedure usually completed within a fortnight.

Bates said the FA should have acted quickly for the sake of both Bosnich and Chelsea.

"We have to rely on the FA and they should have resolved it by now," Bates told British television.

"Either he's innocent and can come back to play for us, or he's guilty and we have to look at taking some action.

"The FA are dragging their heels and it's not fair to the player. They have been preoccupied by one or two other little things like funding for the National Football Centre."

Bosnich's girlfriend, model Sophie Anderton, said he would be out of the clinic by Christmas.

"It will be wonderful to have him back home. I've told him from the start that I'm standing right behind him," she told British newspaper the Daily Mirror.

"It hasn't been easy but we'll get through it in the end. He has me by his side."

Bosnich is expected to launch a legal battle to clear his name.

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