The clone tool
What you need to do is study the way the gradient lies.
Then select the clone tool and use the soft edge brush.
then following the gradient (on this pic diagonal top right to bottom left)
clone the area next to the text.
It takes a bit of practice and plenty of 'step backwards' until you get it right.
Hope that makes sense. its all ive got time to explain at the mo. shout if you get stuck.........