2) Kostas Manolas (Olympiacos)
Still an option for Arsenal, there have been various reports linking them strongly with a move for Olympiacos defender Kostas Manolas, who has become one of the most highly regarded young defenders in Europe in recent times. The 23-year-old has also been linked with Juventus, but may be heading to the Emirates Stadium if Arsene Wenger fails in his efforts to sign Alderweireld first.