Reports in France claimed that United had introduced £40m for the 22-year-old, however West Ham have been unwilling to negotiate except Anthony Martial used to be integrated as a part of the deal.
United ended up signing Harry Maguire for £80m from Leicester City, whilst Diop has stayed at West Ham.
And the French centre-back is adamant that he does now not imagine West Ham to be a ‘springboard’ for a transfer to every other membership.
‘Whether technical, tactical, physical, I still have a large margin of progression,’ Diop mentioned in an interview with France Football.
‘It is the performance that I will make in the match that will determine if I have the level to play with Les Bleus. It’s up to me to paintings. That’s how I see issues.
‘All excellent gamers cross into the nationwide crew. Well, if I’m excellent, it’s going to come if it must come.
‘Obviously it’s a purpose, however the evidence that I deserve to succeed in it, it’s me who should give it.
‘West Ham, for me, it was not and is still not a springboard to go elsewhere, it’s the membership the place I would like to check out to turn into the most productive defender I will be, when put next to my qualities.’