One of Mark Warburton's Glasgow Rangers men is delighted to be playing with the Ibrox legend.
The striker was widely expected to leave Goodison Park this summer but failed to do so.
The defender joined the Gunners from Valencia this summer.
Celtic will face Old Firm rivals Rangers at Celtic Park in the Scottish Premiership next weekend.
The Arsenal and Everton midfielders have both been left out by Sam Allardyce.
Celtic, led by Ronny Deila, were knocked out of the competition by Mark Warburton's Glasgow Rangers side.
West Ham United kick off their EFL Cup campaign later this month and the Spaniard could play a part.
Wilshere departed Arsenal to join Bournemouth on loan on deadline day.
The 31-year-old to yet to feature for Mark Warburton's Glasgow Rangers side in a competitive fixture.
The Tottenham Hotspur ace can't wait to show off his speed.