Opinions welcomed on this - FIL's next door neighbours (NDN) have asked to buy his flat. They have spoken and made a verbal agreement of some sort, which is detailed below in the email received today by his DC.
He lives alone in the family home, and has considered moving a few times the last few years (at his DC suggestion) but had decided that he did not want to leave his home, due to memories and familiarity. He's in his 80s, does not have English as his first language, and may not fully understand what he's agreeing to.
How would you read the email below? 
“ NDN proposed to buy my property and we discussed and broadly agreed the following:
1 We appoint our own conveyancing solicitors but not the estate agents <span class="italic"><strong>a .Seller’s saving £ 22,500 incl vat at 2.5% agency fee on 750K and similar amount by buyer b. I could use solicitor recommended by Foxton or anyone recommended by you c. Solicitor’s fees to be determined</strong></span>
2 Valuation : <span class="italic"><strong>Both Foxton and Chesterton advised asking price of £ 750K</strong></span> <strong>which I would quote as my selling price</strong>
3 After the search done by buyer’s solicitor possibly with their own valuation idea we discuss on principal for price to be agreed of the property<strong>. Please join the process from that point onwards</strong>
4 NDN confirmed that he could make transfer of the agreed value in one remittance either directly to me or to my solicitor.
5 However he needs the deed of sale signed by both of us attested by our solicitors to enable him to remit the money required by Thai Foreign Exchange Authorities. <strong>Any comments/ suggestions to improve on that?</strong>
6 He could transfer funds as early as 31 October, 2019
7 After the exchange of contract NDN would allowed me to stay on a few months”