Pete Alonso elected free agency at the end of last season and after a delayed free agency in the offseason, the All-Star infielder re-signed with the team on a two-year $54 million deal.However, the reunion didn't last long as Alonso has decided to exercise his opt-out clause after the Mets failed to make the postseason, following a 4-0 loss against the Miami Marlins on Sunday. View this post on Instagram Instagram PostFans reacted to the news of Alonso testing free agency for a second time in two seasons."Fastest opt out of all time," wrote a fan."Can this day get any worse," wrote a Mets fan."Should've taken the Jays offer in the offseason. Polar bear up north pretty much sells itself," claimed a fan."Bro couldn’t wait 1 day," joked a fan."It’s been like 30 minutes bro," wrote another fan."Bro had enough 😂😂"(Image source - Instagram)Pete Alonso's contract demands last offseason deterred many teams; however, the All-Star first baseman had a solid year, batting .272 with 38 home runs and 126 RBI. It'll be interesting to see if the former Rookie of the Year can sign the lucrative long-term deal he desired in his last free agency.Pete Alonso thanked Mets for their support before opting out of current dealPete Alonso has been a perennial All-Star in his seven seasons with the Mets, establishing himself as a fan favorite. While he has decided to opt out of his deal with the team, he thanked them for their love and support this season."Playing for this organization, this city – they've continued to believe in me," Alonso said. "I love playing here. There are some great guys in this clubhouse, some great people on the staff. Every single day, it's been a pleasure coming to work and putting on the orange and blue."Alonso's signature won't come cheap, as he earned his fifth All-Star selection this year. However, several teams can utilize his firepower and defense, including rivals like the New York Yankees.