The Newcastle United boss has been discussing his side's man of the moment.
The 24-year-old scored no less than four goals against Norwich City last weekend but McClaren has sounded a firm warning towards the attacking midfielder.
Indeed, the coach wants the same level of performance each week.
The Chronicle report that Wijnaldum was a £14.5 million summer signing and here's what McClaren has had to say about the Dutchman:
"Again another one who’s got a long way to go but he’s going to be a good player. He’s showed that in spells from the Southampton game on and got rewarded last week.
"Again, consistency each week. We can’t have that one week, then another minute nothing."
With Wijnaldum, however, it just doesn't sound like he's a man who scored four goals in his last game.
The Newcastle head coach should be parading him, using him as a weapon against Sunderland in the mind-games department. Instead it's 'yeah, he's okay, just needs to be more consistent.' It's all a bit glum, especially when the manager is always so positive and so keen to - often laughably - defend his struggling players.
Still, McClaren is clearly valuing caution above all else going into the Tyne-Wear derby and, off the back of a 6-2 win, Newcastle fans will hope he knows exactly what he's doing.