While the four-year extension Adam Thielen signed Monday puts plenty of cash in the Vikings wide receiver's bank account this year — $14.3 million, to be exact — it also keeps the team's salary cap situation in check.

Thielen's cap hit is $8.105 million for 2019, only $5,000 more than the $8.1 million figure he was scheduled to carry this year on his old deal. In addition to a $9 million signing bonus, he gets a $4.3 million roster bonus this year, and a league-minimum $805,000 base salary.

Thielen's four-year deal also includes a $5 million roster bonus if he is on the Vikings roster by the third day of the 2020 league year. The deal has a total of $33 million in guaranteed money, $14.1 million of which is guaranteed at signing.

His deal includes base salaries of $4.8 million in 2020, $11 million in 2021, $12.045 million in 2022, $13.05 million in 2023 and $14 million in 2024. Thielen's 2020 base salary, as well as $9.095 million of his 2021 base, are guaranteed against injury now, and would become fully guaranteed if he is on the roster by the third day of each league year.

Thielen can earn per-game roster bonuses of up to $100,000 each of the next two years, and $500,000 in the final four years of the deal, as well as $100,000 annual workout bonuses. His incentive structure is similar to the one Stefon Diggs received last year, where Thielen can earn escalators totaling up to $9 million in the final three years of the deal, based on each time he hits 100 receptions or 1,375 yards in a season.

If the 28-year-old were to play out the entirety of his six-year deal and hit every incentive available to him, Thielen would earn $87.3 million through the life of the contract.

Vikings sign four

The Vikings made official the signings of four players on Monday, including two newcomers in quarterback Sean Mannion and receiver Jordan Taylor. All four signed one-year contracts, according to league sources.

The 6-5, 210-pound Taylor becomes the biggest receiver on the roster by 3 inches. The fifth-year pro played sparingly in four seasons for Denver while new Vikings assistant coach Gary Kubiak was Broncos coach and then personnel adviser, so the Vikings know what they are getting. Taylor, 27, missed the 2018 season following hip surgery. He went undrafted in 2015 out of Rice.

Mannion fills the void left by backup quarterback Trevor Siemian, who left in free agency to sign with the Jets. Mannion, a 2015 third-round pick by the Rams, is familiar with the Vikings' new offensive system under Kevin Stefanski and Kubiak, having practiced Sean McVay's adopted influences (from Mike Shanahan) in Los Angeles (Kubiak and Shanahan go way back).

Safety Anthony Harris and tackle Rashod Hill signed their one-year restricted free-agent tenders. Harris, a starting safety, was given the second-round tender worth $3.095 million. Hill, a key reserve with 17 starts in two seasons, signed an original-round tender for $2.025 million. The deadline for NFL restricted free agents to sign offer sheets is Friday.

The Vikings now have 67 of 90 roster spots filled ahead of next week's NFL draft and ensuing college free agency.

Staff writer Andrew Krammer contributed to this report.