The former world number one has taken Nick Kyrgios under his wing during the Australian's time on the ATP Tour.
Coach Jamie Delgado and his mother Judy watched the session.
Bautista Agut is known for his baseline style, which could test Murray's hip to its limit.
A victor of 45 titles on the ATP World Tour, Murray will bow out of tennis as one of the greats of his generation.
"I don't know", she said.
"It is a similar feel to drawing Kevin Anderson in the first round a year ago, but I was in a good place and managed to come through in the fifth set".
For me, I've got Novak facing off against Kei in the quarterfinal, and - given his track record against the Japanese player (15-2 over the years) - I've got Novak advancing through to the semis.
HIBS have paid tribute to Sir Andy Murray for his "incredible" career and the help he has offered two of the club's rising stars.
Yorkshire’s Kyle Edmund in tribute as Andy Murray heads towards retirement
"Never say die, he pushed any opposition to the absolute physical and mental possibilities and limit on the court. I wish him a painless future in whatever shape or form that is, on or off the court".
"But it's definitely interesting times, I'd like to call it, not bad times in our sport", he added. I think he's entertaining.
"But being honest, when somebody like him, that he achieved nearly everything in his tennis career, is suffering like he's doing for such a long time already. probably he does the right thing for his mental health".
Few people would have put money on Murray being the first of the "big four" of tennis to retire, and his imminent exit is a stark reminder that this golden generation can not go on forever. He has two young kids, I'm sure he will be doing the school run, getting their supper and helping with homework.
"He's a good guy, Hall of Famer, legend".
However, her fitness had since gone up a notch and Margaret Court's all-time record of 24 Grand Slam singles titles may well be in peril at Melbourne Park, he said.
Murray held a news conference Friday at Melbourne Park, and had to leave the room for a while soon after it started to compose himself as he fronted the media.
He captioned it: "Best way to feel better after a tough day is a big cuddle from your mum".
Hibs Manager Neil Lennon tweeted: "Andy Murray is an inspiration and a role model".
Xisca Perello, 28, is usually in the crowd cheering on her 17-Grand Slam victor. You took me under your wing as soon as I got on tour, and to this day you have been someone I literally just look forward to seeing. That's impossible to forget. Is not nice to finish like this because is great that you finish when you want to finish, not because of another thing.
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Cook County State's Attorney Kim Fox earlier this week called on victims to share their stories with police and prosecutors. Kelly in Springfield, citing security concerns following protests outside of the singer's Chicago studio this week.