The former Liverpool defender is expected to complete a move to Celtic this weekend.
The Austrian is working hard on the training pitch ahead of the new season.
Steve Bruce resigned as Hull City manager yesterday
David Moyes was appointed Sunderland manager earlier this morning.
The forward joined in a £25 million move from Newcastle United on Friday.
The midfielder insists he is not thinking about leaving the club.
Moyes was confirmed as Allardyce's replacement at Sunderland on Saturday.
The Leicester City captain is preparing to come up against the Scottish Premiership side in a pre-season tournament.
Kolo Toure is set to reunite with Brendan Rodgers at Celtic.
Moyes was confirmed as the new Sunderland manager on Saturday morning.