Last season, Alonso took eight podiums on his way to fourth place in the drivers' standings, his highest placement in F1 since 2013 with the Scuderia.
Alonso drove for the Maranello-based team for five seasons from 2010-2014, finishing second in the championship three times, including coming agonisingly close to the title in 2010 and 2012.
What did Alonso say about Ferrari?
Alonso is known for his team radios, including several famous lines during his second stint at McLaren, where he complained of a 'GP2 engine' being 'much slower than before'.
The Spaniard took to the airwaves again in Friday practice for the Canadian Grand Prix, this time to complain about the way Charles Leclerc was driving, and in the process, taking a jab at his former team.
"Leclerc is the slowest of all in the last corner. No mirrors," Alonso bemoaned as he had to bail out of a lap when obstructed by the Monegasque at the final chicane.