Celtic skipper Brown may require surgery
The Hoops skipper has been plagued by an ongoing hip problem this season but is now having trouble with his abductor and may have to succumb to an operation to address the troubled area.
"Scott will be seeing a specialist and we will wait on the outcome of that," Lennon said.
"We will have a look at what he had before and he might require surgery.
"We are not sure yet, but hopefully that won't be the case."