Just to put things into context for you.
I talked to a guy who was involved in the Bale transfer to Madrid who said that once Spurs/Madrid/Bale and his agent had agreed the major terms of the transfer, it took between 2 and 3 weeks for the various advisors (lawyers, accountants, agents etc) to agree the final points of the deal sufficiently to put into a contract and the practical stuff (eg where was Gareth going to live until he got a permanent pad ). And Gareth was pretty laid back and not difficult, likewise his agent (Bartlet) was very professional and got on well with both Levy and Madid so no problems there either.
In short, transfers take time, and given Lyon were still trying to find alternative bidders a week or so ago, it would not surprise me at all to find the Ndombele contract isn't finally signed for another week or two - although I am pretty sure all Spurs supporters (and Spurs) would like it done this week, it may not be possible for logistical reasons.
That's the difference between playing Football Manager/FIFA and real life I am afraid.