Tyrone assistant manager Brian Dooher says "it will be a struggle" to get players up to speed for their All-Ireland SFC semi-final against Kerry even with an extra six days to prepare for it.
The showdown with the Kingdom has been put back because of a number of Covid-19 cases within the Red Hands squad.
The clash with the Munster champions was originally scheduled for this Sunday, but has now been re-fixed for Saturday, 21 August.
However on Monday Tyrone officials warned that not enough time has been allowed for recovery and a return to play, with county chairman Michael Kerr revealing that a request for a two-week postponement until the weekend of 28-29 August was turned down by Croke Park officials.
Dooher shared that view on Tuesday as he admitted their preparations will be "brutally hindered".
"We asked for two weeks to give our players the opportunity to recover from Covid, recover from the effects from it and hopefully get them back into an elite environment of high-intensity football," Dooher told RTÉ Sport.
"[We've been] given the six days extension, which we're grateful for too, but it's going to be a struggle to get these boys back and get them performing to their ability.
"It definitely will be a struggle to get them back to get some of these players back in any sort of shape. Preparations will be brutally hindered but we are where we are, we'll make the best of it and we'll make a call on it probably the middle of next week."