That's the nature of the salary cap and with successful clubs, they will have to upgrade the likes of Makinson, Welsby and Walmsley, which means cut backs on other players. They have probably offered Coote a reduced one year deal, while Rovers with some cash to spare can offer a better and longer deal.
Decent signing for Rovers, better than Quinlan, but older and more expensive, be interesting how he gets on as he wont be playing with the likes of Lomax and Walmsley.
Also Saints and Wigan are losing some real quality and might give others a chance to catch up.