12 months left on contract
Although there is manoeuvrability in terms of transfer funds at Celtic Park, Rodgers should still be wary of how much he is spending and if a bargain deal comes along that suits the Hoops, he should take it.
Step forward McLean, who showed his prowess in the Scottish Premiership as well as the Europa League, as a potential cut-price deal with only 12 months left on his contract.
If Celtic can lure McLean to Lennoxtown to team up with Hayes once again for less than £2million, then he would prove an absolute steal.