 Complete the following phrase:  At the beginning of the season, Bonaventura switched his number from 28 to 5. He started Milans opening match of the Serie A season against Torino. In the second half of the match, he was fouled inside the six-yard box by Joel Obi and Milan was given a penalty which was converted by Carlos Bacca to complete his hat-trick in Milans 32 win. He scored his first goal of the season on 2 October in Milans memorable comeback against Sassuolo as the game finished 43. The following week he assisted MBaye Niangs goal against ChievoVerona in a 31 win. He also assisted Susos first goal in the 22 draw against city rivals, Inter. On 23 December 2016, Bonaventura scored the equalising goal in the 