"It is going to be a busy summer for them," reflected the Scot.
"But it is all about availability. Some clubs don't want to sell their players to anyone, which is admirable.
"It is a difficulty. You could have a check list of players but it is reduced by 50% because clubs don't want to sell.
"Then a lot of clubs, knowing that City have that money there, will be adding noughts onto the value of every player they go for.
"Mark has to try and evaluate the players he wants at his values rather than their values. That is the difficult thing."