Melbourne, July 28 - Former Australian captain Allan Border feels struggling seamer Mitchell Johnson needs to step away from Test cricket for at least a week to rebuild his game.

Border said Johnson should be replaced by Stuart Clark for the third Test of the ongoing Ashes series, beginning Thursday at Edgbaston.

'It's not going to hurt Mitchell (Johnson) to stand down for a week, go out the back in the nets, and thunder in for the equivalent of up to 15 overs a day until he gets it right,' Border was quoted as saying in the Herald Sun.

'Then he'll have nothing else to worry about apart from his bowling.