"We congratulate Luke on playing in the World Cup finals and wish him well for the future,2 the boss told the official website.
"I didn't expect him to report back because he will be busy trying to find a new club. He is a free agent and can arrange a transfer without consulting us.
"We were disappointed to read Guus Hiddinck's comments that Luke should look to play in a 'proper league'.
"But good luck to him. It will be very interesting to see which 'proper league' he ends up in."