The England skipper is set to face his red-hot Liverpool team-mate in Brazil after the Three Lions were drawn in the same group as Uruguay.
"He is usually quite chirpy in and around the training ground, but since the draw was made he has been quiet," the midfielder said.
"He hasn't said much anything and has gone down the silent road, which is a bit of a worry.
"He is certainly a player we will have to keep quiet in that game if we are to get a result because, as you've seen most of the season, he is a matchwinner.
"It is a very tough group. England will have to play well and put in three big performances to get out of it."
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