John Collins has told Celtic they can only consider cashing in on key duo Arne Engels and Alistair Johnston after their Champions League play-off and if they have adequate replacements lined up.
The Hoops’ succession planning has come under intense scrutiny over the past year after they were widely deemed to have failed to replenish their squad accordingly following the sales of key attackers Kyogo Furuhashi, Adam Idah and Nicolas Kuhn.
