The Football Association is expected to vote against controversial changes to Uefa rules that would allow its president Aleksander Ceferin to stay in post until 2031.
Ceferin, who took over the role from Michel Platini in 2016, was re-elected last year and is due to step down in 2027.
Current rules only allow a president to serve three terms in office.
But Ceferin and his supporters are working on a plan to amend the rule.
Platini stepped down in May 2016 after being banned by Fifa over ethics breaches.
The amendment would mean any appointment before 2017 would not be counted as part of the allowable three terms - with Ceferin having taken over part-way through Platini's four-year cycle in office.
The proposed change will go to a formal vote at Uefa's annual congress in Paris on Thursday.
It will need a two-thirds majority of the organisation's 55 members for the relevant statutes to be amended.
The term limit proposal is one of a number of statute changes tabled as a block of measures for the vote.
Gill and others attempted to "unbundle" the measures at Wednesday's executive committee meeting, which would have allowed votes on each individual issue.
But Ceferin's demand for the entire package to remain together was agreed by the committee.
That decision may mean the FA is the only dissenting voice tomorrow as there are other issues - such as including guaranteed female representation numbers on Uefa's ruling body - which it supports.
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