Former Chelsea player Michael Ballack has issued advice to a struggling Kai Havertz at Arsenal.
According to Ballack, Havertz is too reserved as he stressed that the Germany international needs a certain robustness.
Since arriving at Emirates Stadium from Chelsea in the summer window, Havertz has put in unimpressive performances for Arsenal so far.
The 24-year-old German player is yet to win Arsenal fans to himself as he has only scored just once in 12 Premier League appearances for the Gunners this season.
Speaking about his fellow countryman, Ballack told SportBILD (via Sport Witness): “Kai Havertz has outstanding skills. But as already mentioned, he seems a bit too reserved for me.
“You need a certain robustness and mentality, especially abroad, to assert yourself in difficult situations.
“I hope he gets it done. In my opinion, it is still too early for that [an exit]. He should assert himself at Arsenal by all means possible.”