Goff cap hit is approximately $8.9 million in 2019. 2020 would be his 5th year option. That would have been $20.9 million in 2018, and given the huge QB contracts given out this past offseason, is likely to rise significantly. I'm estimating $24-25 million by 2020. So they would need to sign him long term before then to have the initial cap hit be less than that, and given what has happened in QB contracts - If Goff is as good as we expect, gotta figure 6 years $168 million at least. The first year might be less than $24 million thanks to a huge signing bonus, but each bit less adds to future years. So we have to figure a decent cap hit at least. Now, they might save $10,750,000 from 2019 by not resigning Brockers, who is a free agent, though that's a loss most of us would prefer to avoid. Gurley's extension kicks in for 2020 also.
2020 is the year I expect player losses that will bother people. On the bright side, 2018 and 2019 should be good.