Provide him with some newspaper in the corner where he pees and also provide a piddle pad for him to shred, lol, so he isn't as likely to shred the newspaper.

Another thing would be to try putting something not so nice tasting on the piddle pad like bitter apple and use a trigger scent like some very diluted cheap perfume that he learns to associate with the nasty taste of bitter apple.
That way, once he's learnt that the smell of the perfume is a prelude to the nasty taste, he'll not want to touch whatever he can smell it on and you can just use the perfume alone and not even have to put the bitter apple on it.