Chelsea boss Thomas Tuchel is desperate for his squad not to be sold off this summer.
Tuchel has already lost Toni Rudiger and Andreas Christensen and fears several more senior players will soon follow.
The Daily Express says new Chelsea chiefs are in doubt over the futures of Marcos Alonso, Timo Werner, Hakim Ziyech, Christian Pulisic, Kepa Arrizabalaga and captain Cesar Azpilicueta, despite Tuchel wanting to keep them beyond the summer.
Tuchel has been assured by new president Todd Boehly as many as six new signings this summer.
But the manager wants to keep those the new board have doubts about at Stamford Bridge for further squad depth as the Blues are set to compete in the Champions League and with the change in rules that will allow five substitutions from next season.