Broad has played more than 100 Test matches for England since making his debut in 2007 and is expected to be a key player in Joe Root’s first tour of Australia as captain.
However, the England physios have advised the fast bowler to play no cricket whatsoever between now and the first Test in Brisbane, according to Sky Sports.
Broad was part of the side that closed out a 2-1 series win over West Indies last week, their final set of Test matches before the Ashes.
But he was out-shone by Jimmy Anderson and Ben Stokes and only managed nine wickets at an average of 36.22 in the three-Test series.
And injury was subsequently added to insult during the final match at Lord’s when Broad slipped on his way out onto the field.
“It was ridiculous,” said Broad.
“I was just walking out with my spikes on and my back spike just slipped down a stair and I fell down it.
“I said to Jimmy Anderson, ‘I think I’ve hurt my ankle there’.
“Then it throbbed throughout the afternoon. There are no worries.
“If there was a Test next week I’d be fit to play.”
But after a scan on Tuesday to assess the extent of the damage to his heel rather than his ankle, it is now understood that he will not play in either of Nottinghamshire’s final two County Championship matches of the season, which start on September 19 and September 25 respectively.
Broad will also not be selected for any of England’s three warm-up matches, featuring in total 10 days of cricket, in an effort to ensure he is 100 per cent fit for the first Test.
The squad for the Ashes is due to be announced at the end of the month with selectors expected to inform players during the final round of Championship matches whether or not they will be on the plane to Australia.