West Ham will reportedly confirm the double signings of goalkeeper Lukasz Fabianski from Swansea and central defender Issa Diop from Toulouse this week, for a combined fee of around £30m.
The Hammers have already completed the signing of Fulham right-back Ryan Fredericks on a free transfer, and have been linked with several other stars as the transfer window rumbles on.
Pellegrini has been rumoured to be in for Swansea duo Fabianski and Mawson this summer, with the pair eager to depart the Swans following their relegation. It remains unclear whether Alfie Mawson will be heading to the London Stadium, but it is believed Fabianski could be announced within the next 24 hours, as a £7m fee has been agreed between the clubs and the Pole has signed a three-year-deal.
Diop on the other hand underwent a medical in London yesterday and is due to complete a £22m move from Toulouse. West Ham look to have fought off competition from both Everton and Sevilla for the 6ft 4in 21-year-old.
The Hammers remain interested in signing Brazilian midfielder Felipe Anderson from Lazio, but it is understood that the deal has stalled.
Any potential deal for Javier Pastore is also said to be off the cards, with the Argentine supposedly preferring a move to Italy.