Manchester United have reached an agreement in principle to sell Mason Greenwood to Marseille, according to Mail Sport. The initial fee is believed to be £27million plus £3.2m in add-ons. The slight delay was due to Greenwood’s approval for the transfer to progress. There has now been a verbal agreement between the player and the two clubs over the proposed transfer, but the deal has not yet been finalised. Greenwood will now travel to undergo a medical in France and sign the necessary paperwork. The move to Marseille would see the 22-year-old play under Roberto De Zerbi, who was hired by the …