Red Bull Racing have turned up to Imola with a suite of RB21 upgrades — and Max Verstappen hasn't had a great first impression.

Red Bull team principal Christian Horner says Max Verstappen is free to let off steam in other motorsport series, but reaffirmed that the Dutchman’s “focus has to be” on Formula 1 following a secret test at the Nurburgring last week.

Max Verstappen finished the second free practice with a fifth-place spot. Crossing the finish line more than four-tenths behind Oscar Piastri, the Dutchman sees there is still plenty of work to be done to contest for the prizes.