England will not discover when key all-rounder Andrew Flintoff will return to action until the eve of the first Test against Pakistan.
Flintoff, 28, is currently resting his injured left ankle, which is due to be assessed once again in the build-up to the Lord's opener on July 13.
The problem flared during the third Test defeat to Sri Lanka at Trent Bridge and forced Flintoff to sit out the current NatWest Series.
A bone spur was removed from the joint last January but further surgery was ruled out this time.
"We will have another look in two weeks and see where we are," Flintoff, who has seen two specialists in the past fortnight, told Sky Sports.
"There is scar tissue in there and whether the bone fragments were the result of the operation or were already in there we don't know.
"We are going down the route of physio and exercises to strengthen the ligaments around the ankle.
"I'm not running at the moment, I'm doing a lot of cycling. I'm doing things that don't cause pain and trying to tick over.
"So far it's been good, there are no adverse effects."
Without Flintoff, captain in the absence of Michael Vaughan for the previous six Tests, England have struggled in their one-day campaign against Sri Lanka.
"I've been trying to watch but my days have been quite full," said Flintoff.
"I've seen bits here and there but probably not as much as I'd like to have done."