It seemed Liverpool would hold out against the odds until Matip accidentally diverted Pedro Porro's cross into his own net with just seconds left.
Liverpool manager Jürgen Klopp made 11 changes in his starting lineup from the 3-1 comeback victory over Wolverhampton on Saturday in the English Premier League.
Both teams also had goals disallowed by VAR checks in an open and chance-filled first half.
The 29-year-old Fabinho made 219 appearances for Liverpool and helped the club win the Champions League in 2019 and the Premier League a year later.
Henderson won every major club honour during his time at Liverpool, including the Champions League in 2019 and the Premier League title a year later.
The move would see Henderson link up with Liverpool great Steven Gerrard, who has just been hired as manager of the Saudi Pro League team.
A quadriplegic with a 90 per cent disability, Preethi Srinivasan is also the first disabled woman to seek admission into the PhD programme at IITs in 2019.
Carvalho played 21 times for Liverpool in all competitions last season but his game time dried up in the second half of the season.