"Brad is back at Middlesbrough, and they say he's not ready for two months," a frustrated Hignett told the Hartlepool Mail.
"We felt it was sooner, but their opinion is two months so we have to abide by their decision.
“It makes me reassess who I loan players from because the system has changed too.
"Boro said Fews is up to the window so I would doubt we will see him again (at Hartlepool).
“I don't think we would be loaning him back again, but that's a conversation we would have with Middlesbrough. It's disappointing to lose him - he would have been an asset."