Luis Diaz has been named in Liverpool's squad to face Luton Town despite the ongoing distraction of his father's kidknap.
The Colombian returned to the bench for the Premier League game at Kenilworth Road.
Diaz had missed the Reds' last two games after news broke about his father's disappearance.
His mother had earlier been returned, and the National Liberation Army (ELN) have since said his father will be too.
Discussing the decision to include Diaz pre-match, Klopp said: «It's still emotional, but Luis decided three days ago that he wanted to try and train again.
»The football pitch and the training ground is a safe place for the boy. There he can behave normal, forget a for few minutes what's going on.
«All the signs he's gotten are positive [about his dad's return]. Negotiations are ongoing, but still positive, so that's why he wanted to be part of the team and could come on.
»He trained well, but nobody can imagine how something like that feels."
Jurgen Klopp had ealier commented on Diaz's mental state during the week, saying: «If he feels right, he will be will us.
»You can see he didn't sleep a lot. The news from Colombia gives us a little bit of hope.
«I cannot say what we will do. It's up to him, if he makes himself available or not.
»We will not force it. We are waiting together for good news."
Elsewhere in Liverpool's line-up there is just one change from their last Premier League match, with Joe Gomez replacing Kostas Tsimikas at left back.
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