Arsenal, Liverpool and Manchester United have all been alerted after Marco Reus refused to negotiate a new contract at Borussia Dortmund.
15-year-old Anderlecht goalkeeper Mile Svilar is currently linked with a move to either Arsenal or Manchester United.
Manchester United boss Louis van Gaal looks to strengthen his defence as he looks to sign £40 million-rated Valencia defender Nicolas Otamendi.
Arsenal target Adrian Rabiot will be sold by Paris Saint-Germain unless he signs a new deal with the French club.
Manchester City are targeting Ross Barkley despite his club Everton demanding £50 million for the midfielder.