limited company acquisition question

[computerSaysNo]

Let's say a 3rd party was interested in acquiring/merging a private limited company that was completely owned by five parties with a 20% stake each.

Let us also say that an offer was tabled by this prospective purchaser that four of the five stakeholders found acceptable.

I have two questions:
1. Can the remaining stakeholder be compelled to sell their 20% stake once the other 80% is acquired in the company by a single 3rd party ?
2. If the remaining stake holder can not be compelled to sell, what becomes of their stake should such a large controlling interest be taken in the company by a buyer intending to merge it with other, larger companies ?

Many thanks for any insight anyone can share with someone unaccustomed to these matters.

[bwglaw]

It will come down to what the Memorandum and Articles of Association say and how votes are carried on such a motion