Good for both of them.
Turner isnt a world beater but is a good solid centre, he is about as good as there is out there that is available or likely to be available in the near future.
Pervcival represents an exciting young talent. He has a lot to learn so a two year extension to his 21st birthday should give a better indication of were he will end up at quality wise. All the signs are that he will be very good.
I think Saints are signalling that they see Turner and Percival as the clubs two centres going forward.
We just need to get the wings sorted out. I guess Makinson will fill one position, though i dont see him as a genuine top drawer winger, just fairly solid pro with a bit of pace.
We therefore just need to sign one other winger, preferably a proper Saints winger to excite the crowd and give us full length trys to savour. I dont want us to sign a big solid lump who can make hard yards but who offers no excitement and flair.