B-R lists Gibson as being FA eligible in 2020. But, I'm not sure if they mean after 2020, or going into 2020. He had 3 years, 56 days service time coming into 2017. So, even with his time in AAA he should finish 2017 with 4 years and like 25 days or so. I think he was down for a total of less than 30. That would put him on pace to be a FA after the 2019 season. I absolutely would not extend him. You want to get freaked out a little? Check out Gibson's numbers from 2016 and 2017. They are practically identical in nearly every category with Gibson having 3 more starts scheduled this year. This is who he is folks. To assume or expect or even hope otherwise would be a big mistake IMO. I'm not ready to make a call regarding 2018 yet. And this despite knowing that the list of in house options is neither long nor distinguished. I guess if he is tendered for 2018 and it looks like the Twins have 6-7 better options in ST, you can always flip him then. A healthy starting pitcher is ALWAYS tradeable. Might not get much, but someone will definitely take him.