Natwest T20 champions Birmingham Bears have signed New Zealand captain Brendon McCullum for this summer's competition.

The 33-year-old has signed a seven-game deal, which will make him available for half of the Bears' qualifying group games, as they aim to defend the trophy they won for the first time in August.

McCullum's New Zealand side have a two test match series against England in May, and the aggresive batsmen will be available for the Bears shortly after that.

"Edgbaston is a fantastic ground to play at," said McCullum. "Hopefully, it will be rocking for the big Friday night matches. I'm really excited about becoming a Bear."

The Bears' director of cricket, Dougie Brown is looking forward to see McCullum entertaining the Edgbaston crowd: "Securing his availability for our last seven games has to make him one of the biggest overseas player signings in the competition's history.

"It was great to see bigger crowds at Edgbaston for our Friday night matches last season. Hopefully the opportunity to see one of the greatest limited-overs batsmen of the modern game will ensure we get even more fans to Edgbaston."

McCullum, who has previously played T20 for Sussex in 2010 and Glamorgan in 2006.

The big hitter averages just over 35 in Twenty 20 internationals with a strike rate of over 135.