Having been appointed as West Ham manager in the summer, Manuel Pellegrini spent roughly £100m in his first transfer window on the likes of Felipe Anderson, Issa Diop, Fabian Balbuena and Lukasz Fabianski as he attempts to get the club challenging for Europe.

All of the aforementioned names have slotted straight in and performed admirably, and that's without even mentioning the fact that the former Manchester City boss also signed Jack Wilshere, Andriy Yarmolenko and Lucas Perez.

£42m man Anderson, signed from Lazio, saw the Hammers smash their transfer-record, but the Brazilian has delivered with six goals and two assists so far in his debut Premier League season.

Diop and Balbuena have been rocks at the back, whilst behind them, Fabianski has continued his excellent form and picked up where he left off whilst with Swansea.

At just 21 years of age, we feel that the signing of Diop from Toulouse was the best of the bunch, given his current ability and ceiling to improve even more; he is even of interest to Manchester United, thanks to his stunning start to life in England.

There are so many to choose from, but we want to know who you think Pellegrini's best signing at the London Stadium has been since his appointment.

Have your say down below, and keep an eye out for the published results...