Celtic will be in the market for some fresh blood this summer as Brendan Rodgers makes some alterations to his squad. Positionally, the goalkeeping area is the most likely to undergo significant change this summer due to Joe Hart’s retirement at the end of the campaign. Brendan Rodgers has also confirmed that Scott Bain and Benjamin Siegrist may be set to move on, as he stated back in February when discussing a potential Hart replacement [Sky Sports]: “Listen, we might need even more than one goalkeeper; some of the guys that have been here for a while may want to go and play.” There may also …