Chelsea's three prospective buyers have been asked to provide further information about their improved offers for the club before a preferred bid is chosen.
Consortia fronted by Todd Boehly, Sir Martin Broughton and Stephen Pagliuca all submitted their binding, final offers for the Blues last week.
Now, the merchant bank in charge of the sale, the Raine Group, are seeking greater detail from all three groups surrounding their proposals, according to The Telegraph. Once these questions have been answered, one of the consortia will be put forward as a preferred buyer.
Whether the additional checks Raine are requesting will slow the sale down remains to be seen. However, the report notes that all the deadlines for a decision so far have been fluid and Chelsea are keen to make sure everything is in order before sanctioning a change of ownership.
The club will be keen on a sale taking place on 31 May though, as this is when their current operating license expires.
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All three consortia have held discussions with supporter groups ahead of a sale, with at least two indicating their desire to keep current manager Thomas Tuchel at the club.
Transfer guru Marina Granovskaia is also likely to remain at Stamford Bridge post-takeover, though current chairman Bruce Buck may leave.