The Hammers wasted little time letting manager Sam Allardyce leave the club, announcing his departure just minutes ater the 2-0 defeat to Newcastle United on the final day of the season.
Now, West Ham are reportedly close to announcing their next manager, with Sky Sports suggesting that the club are now down to just two candidates - with a third holding a 'very slim' chance of landing the job.
The report states that West Ham are now choosing between appointing Marseille boss Bielsa or Croatian Bilic, who has just left Besiktas.
Bielsa, 59, has had an extensive history in management, which has included spells in charge of Athletic Bilbao and the national teams of Argentina and Chile.
The Argentine is out of contract at Marseille and could look to leave, giving West Ham hope that they can make an ambitious appointment by landing 'El Loco' this summer.
The second option is Bilic, who recently became a free agent having left Turkish side Besiktas. The 46-year-old could be a popular appointment given that he spent time at Upton Park as a player during the 1990's, whilst he has also enjoyed some relative success over his managerial career.
Either manager would be a signal that West Ham are ready to challenge for European football - and in the club's final season at Upton Park before they move to the Olympic Stadium, that's just what fans want to see.