CAV Miley missed Southend United’s 1-1 draw at Oldham Athletic due to a back injury.
Miley picked up the problem during last month’s 2-2 draw with Dagenham & Redbridge.
And Shrimpers boss Kevin Maher is unsure when Miley will be back.
“Cav’s been struggling with his back,” said Maher.
"We're still waiting to find out the full extent of the injury."
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