The 45-year-old was unable to make a long-term commitment to the Rossoneri as rumors linking him with a move to Roma continue to circulate
The Rossoneri coach faces an uncertain summer despite guiding the club to Serie A's third and final Champions League berth ahead of Fiorentina, as rumors of a possible switch to Roma gather pace.
Speaking after the clash in Tuscany, the former Cagliari boss conceded that Milan is in control of his own destiny as he hailed the team for the progress it has made during his three-year term.
“I have a contract, so when a season ends you talk to the club in order to find out what's next. The club might want to replace me, I don’t know,” he told Sky Sport Italia.
“I certainly can’t walk away, as I have a contract, so it is their decision, but right now talking about the future is too early. The season has just ended so let me enjoy this victory.
“In three years the president has put his faith in me and could so easily have fired me this season after the first eight games. We have introduced many new young faces to the mix and helped the older guard too, so Milan have solid foundations.
Milan was trailing Siena and seemed to be heading for the Europa League until the latter stages of the second half when it was awarded a controversial penalty, but Allegri claimed that the decision balanced out previous calls against his side.
“During a season, you get some penalties that are dubious and others that are stonewall but not given. We were two points ahead going into the weekend, our destiny was in our hands, so we got the victory,” he said.