I see no distraction..Rivera already knows he's on the hot seat this season..just win..that's all he has to do..nothing else matters
It has the potential to be.
As an example, you're trying to negotiate an extension with Greg Hardy. Hardy, who likes Rivera, hears that you're looking into replacing him. That news may then become a factor for his decision making. Ditto other players who like Rivera (and remember we have a lot of one year contracts on this team). As you get later in the season, guys start thinking about next year anyway, especially if they're gonna be free agents.
Naturally I hope it doesn't become a distraction, but it most definitely could be.