Manchester United signed Netherlands cente again Matthijs de Ligt and Morocco full again Noussair Mazraoui from Bayern Munich on Tuesday.
The 25-year-old De Ligt agreed to a five-year deal, with the choice to increase for an extra 12 months.
The 26-year-old Mazraoui, who can play with no consideration again or left again, has a contract till June 2028, additionally with the choice to increase for an extra 12 months.
No switch charges have been introduced however British media reported United was paying £60 million ($77 million) for Mazraoui and De Ligt.
United earlier Tuesday bought Aaron Wan-Bissaka to Premier League rival West Ham for a reported price of £15 million ($19 million) to finish a five-year spell at United.
The most effective one-on-one defenders within the English sport, Wan-Bissaka will compete with Vladimir Coufal for the right-back spot at West Ham. Wan-Bissaka returns to London, having began his profession at Crystal Palace.
It completes an enormous shake-up of United’s protection, with the membership having already bolstered its again line on this switch window by signing 18-year-old heart again Leny Yoro from Lille for £62 million ($68 million).