Dont see how you can compare Sissoko and Ronaldo. The roles in the teams are completely different. One is suppose to break up play and close down the space in the midfield, the other is a winger whos suppose to attack and create opportunities?
Each midfleid needs a player who can break up the play and close down the opposing midfielders.. Which is why Hargreaves has been linked with utd as its something they lack.
Bit of a bizarre comparison there mate.