Would be very happy with M'vila, Salah and Ings. Three young quality players that answer three current concerns.
M'vila - the midfield powerhouse desperately required.
Salah - pace, creativity and potentially world class
Ings - A proper finisher who impressed me at Bournemouth before the move to Burnley. Its only injury that's kept this young striker from coming to everyone's attention before now.
Have no idea how much these three would cost but at 23 years old or younger as well as adding quality they also add years of service/investment.