BURNLEY'S on-loan defender Rhys Williams’ availability for the FA Cup tie at Arsenal match remains unclear.

Reports yesterday suggested that Middlesbrough could be set to block his involvement - even if they lose their fifth round replay against West Ham tonight.

Williams joined Burnley from Middlesbrough on a three-month loan at the end of January.

He had previously been unable to play in the Clarets’ fourth round replay against West Brom because he had been signed after the registration deadline for that round.