FORMER Burnley full-back Richard Duffy reckons the Clarets will prove a tough nut to crack tomorrow.

Duffy, who made nine league and cup appearances for Burnley during a loan period two seasons ago, is now enjoying another loan spell with Coventry.

As the Clarets look to re-inforce their play-off position at the Ricoh Arena, Duffy admits the Sky Blues must be at their best.

The Welsh international has marvelled at Burnley's league position and believes their defence is one of the toughest around.

"Steve Cotterill is a great manager and he has done very well with the size of the squad he has got," said the Welsh international defender.

"It is going to be another tough game for us and hopefully we can come out with the three points.

"I was there on loan (at Burnley) for two months the season before last so I know quite a few of the players, many of whom are still there, and I know the manager.

"They are very good defensively so it is going to be a hard game."