McLaren boss Eric Boullier says the team should expect a "tricky" weekend at the Canadian Grand Prix despite the return of Fernando Alonso.
Alonso will be back in the car after missing the Monaco Grand Prix for the Indy 500, which ended with a Honda failure 20 laps before the chequered flag. The Spaniard returns to a team rooted to the bottom of the constructors' championship having failed to score a point in the first six races of the year.
Boullier has praised Alonso for his impressive rookie showing at Indianapolis.
"Of course, we're very much looking forward to having Fernando back in the car again in Canada, after his McLaren Honda Andretti Indy 500 adventure," he said.