Who represents the better value. Lukaku or Morata?

Alvaro Morata is on the brink of joining Chelsea for up to £70m, while rivals Man Utd signed Romelu Lukaku
earlier this month for a fee that could rise to £90m.

But which move represents the best value? Sky sources understand the initial fee for Real Madrid striker Morata is £58m, but if all add ons are realised,
the total fee could rise to about £70m.