George Russell withdrew from the race on Sunday.

Russell will line up at the front of the grid for the third time in a row in Montreal.

But Mercedes boss Toto Wolff told the Italian to “stop the radio moaning”.

Horner, 52, is exploring a way back to the paddock after he was sacked as Red Bull team principal following last July’s British Grand Prix.

Hamilton’s Mercedes career will come to an end on Sunday.

Hamilton endured a torrid weekend in his penultimate race for the Silver Arrows.

Hamilton was speaking at the federation’s prize-giving gala in Baku.