In terms of the players that joined the Hoops, while some may not have made an impact, one that definitely made the most of his time at Parkhead is Patrick Roberts.
During two loan spells from Premier League club Manchester City, the winger ended up making 78 appearances across all competitions.
In those appearances, the Englishman scored 18 goals, provided 26 assists and won seven trophies in the process.
Predominantly playing on the right-wing, the 25-year-old played in numerous positions across the attack and midfield, making himself a useful and versatile squad option.
Now that the former Celtic loan star has brought an end to his time with the Premier League champions and joined Sunderland, it doesn’t seem likely that he’ll be returning to Parkhead anytime soon.
However, the Hoops could sign what may well be a new version of Roberts this summer by securing a move for Bodo/Glimt winger Ola Solbakken, who was linked with a move to Celtic Park last month.
With 53 appearances under his belt on the right wing and 41 on the left, his versatility could also make him a useful option for Postecoglou as Roberts was for Celtic during his period with the club.
In 115 senior club appearances, the £1.8m-rated attacker has found the net 23 times and delivered 27 assists, showing that, once again, just like Roberts, Solbakken has a knack for not only scoring but creating goals as well from the wings.
To compare Roberts’ 2017/18 season at Celtic with Solbakken’s current campaign with his current club, the Norwegian attacker currently has a higher average of assists per 90 minutes than the Englishman racked up.
Labelled as being “[Jose] Mourinho’s nightmare” by journalist Pablo Giralt after the 23-year-old scored two goals in the 6-1 victory over AS Roma back in October, Solbakken could be a solid addition to Celtic’s ranks as they aim to not only regain the SPFL title but also get their hands on other domestic trophies and do their best in Europe.
Moving forward, should Postecoglou feel the need to strengthen what already is a rather attacking team this summer, securing a deal for the Bodo/Glimt star could be a great bit of business for the Parkhead club and give the fans a new version of Roberts to enjoy watching.