No timeframe given for the return of Blackpool goalkeeper Mark Howard
The 32-year-old underwent surgery after rupturing his Achilles in the 3-0 defeat at Burton Albion in March.
He was immediately ruled out for the remainder of last season but has made good progress over the summer.
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Hide AdThe shot stopper is unlikely to feature for the next six to eight weeks at least, but Grayson says there's no need to rush him back.
“He’s progressing well but he had a real bad injury, so it’s the sort of injury you don’t rush back from," the Pool boss said.
“We’ve got two very capable goalkeepers here in Jak Alnwick and Christoffer Mafoumbi but Mark is working hard to get back, whenever that might be.”