Can you name another club who have recently bought four players (eg Sylla, Tonev, Luna and Helenius) then moved them all on a year later?
Liverpool: Aspas, Alberto, Borini, Ilori, Assaidi all lasted maximum a year, before being loaned out and/or sold.
Chelsea Bought Matic, loaned him out after a year, sold him after two years and then bought him back for 5 TIMES the price 2 years later.