Liverpool forward Mohamed Salah has said it is "going to be extremely difficult to accept" the death of fellow Reds player Diogo Jota.
Jota, aged 28, died in a car crash along with his brother Andre Silva, who was 25.
"I am truly lost for words," said Salah, who joined Liverpool in the summer of 2017.
"Until yesterday, I never thought there would be something that would frighten me of going back to Liverpool after the break. Team-mates come and go but not like this.
"It's going to be extremely difficult to accept that Diogo won't be there when we go back.
"My thoughts are with his wife, his children, and of course his parents who suddenly lost their children. Those close to Diogo and his brother Andre need all the support they can get. They will never be forgotten."
The Guardia Civil told BBC Sport both men died at about 00:30 local time on Thursday.
Jota was on his way back to Liverpool for pre-season and, as doctors had advised him against flying because he had undergone minor surgery, he was making the trip by car and ferry.
He married his long-term partner Rute Cardoso, with who he had three children, just 11 days before the fatal crash.