Cesar Azpilicueta has asked Chelsea to do everything possible to reinforce the squad by signing new players.
Chelsea were down by three goals before the second half and ended up losing the match 3-2.
Chelsea has only added Morata, Bakayoko, Rudiger and Caballero while the likes of Matic, Loftus-Cheek and a host of others have left the club.
“When you see the players we lost, and the players we have signed in, they are not the same,” Azpilicueta told reporters.
“Obviously we have very good young players, but we have to know the reality that being champions is even harder the next season. We have experience of that,” Azpilicueta continued, referring to the club’s disastrous start to the 2015-16 campaign.
“So we need players. The young players need help from senior players, top players, not to rush them into a position where they are maybe not ready to go at the moment. It is something that the club is working on with the manager, and hopefully we can get new signings in the next few weeks.”