Jordan Nobbs has withdrawn from the England Women's squad due to a hamstring injury.
The midfielder was a part of Mark Sampson's 21-strong group for the Euro 2017 qualifying double-header against Serbia before being forced to pull out.
Karen Carney scored a hat-trick as the Lionesses ran out comfortable 7-0 winners in Wycombe on Saturday.
The remaining 20 players landed in Belgrade on Sunday evening ahead of the reverse fixture on Tuesday.