Celtic are set for a busy summer of transfer activity that could see plenty of movement in and out of the Parkhead doors. Brendan Rodgers will already be planning on where to strengthen his squad following several instances of the Irishman emphasising the need for ‘quality’ additions to arrive at the club during the season. Before he delves into scouring the globe for talent, solving the futures of loanees Adam Idah and Paulo Bernardo will come to the forefront, with the latter said to have an option to buy worth £6.4 million in his agreement. According to reports, Motherwell goalkeeper Liam K…