The 2019 world champion this year rejoined the Ford squad that afforded him his full-time WRC debut in 2012, essentially on a one-year deal.
It appears Tanak will once again play a key role in the silly season as teams begin to form driver line-ups for the 2024 season.
Tanak has endured a challenging return to M-Sport, headlined by a victory in Sweden and a second-place finish in Croatia, but his campaign has been plagued by a combination of misfortune and reliability that has dropped the Estonian out of the title race.
With Hyundai's Thierry Neuville the only driver from the three Rally1 teams contracted for next year, in theory Tanak could have options. Tanak has previously driven for Toyota in 2018 and 2019, before moving to Hyundai for 2020 as world champion, a tenure that ended with a year remaining on his contract last season.
However, Toyota boss Jari-Matti Latvala has previously stated he has no intentions to change his team's line-up which includes Kalle Rovanpera, Elfyn Evans, Takamoto Katsuta and part-time driver Sebastien Ogier.
Rumours circulating in Rally Finland have however linked Ogier to a move to Hyundai, although these were downplayed by team boss Cyril Abiteboul.
Hyundai is understood to be keen on offering Esapekka Lappi a contract extension while Teemu Suninen appears an option for its third car. The team is also weighing up the prospect of running a fourth car.
Asked about its driver line-up for next year, M-Sport's Millener is adamant the team would like to continue with Tanak but admitted the squad had to be realistic about its options.
Source: Autosport