6. Marvin Compper
Marvin Compper signed for £1million from RB Leipzig. He only had one outing against Greenock Morton in the Scottish Cup and ended up with the reserves. He never played a league game for Celtic, despite staying at the club for one and a half years. Compper is, without a doubt, one of the worst Celtic FC signings ever
5. Mohamed Bangura
The only mistake Henrik Larsson did at Celtic was to recommend Mo Bangura to the club. The Sierra Leone international was fairly hopeless in his time with the Hoops. He was released in January 2014 despite having 18 months of his contract remaining after failing to net in 16 appearances, costing the club around £2million. He is one of the worst Celtic FC signings ever.
4. Derk Boerrigter
Boerrigter joined the Hoops in a £3m move after coming through the famed Ajax youth system. The Dutchman had a decent record at Ajax, helping them to the Eredivisie title in consecutive seasons between 2011 and 2013. Thus, a lot was expected of him.
However, he was constantly injured and never gained enough momentum to put together a good run of form. He even blamed the Celtic medical staff for misdiagnosing and mistreating the ankle problem.
During the last year of his contract in 2015/16 he didn’t make a single appearance for the Bhoys before being released. In three years at Celtic, he only made 16 league appearances and scored only once.
3. Mo Camara
Gordon Strachan’s first signing at Celtic. A free transfer from Burnley, where he had spent 2 years as a marauding left-back who tormented opposition defences with lung-bursting runs and inch-perfect crosses, as well as a decent defensive record. He seemed like a decent signing, and indeed his pre-season performances suggested so, but when it came to competitive games he was all at sea.
His début against Artmedia Bratislava would be the match for which most fans would remember him. He was torn apart defensively by the Slovakian side’s strikers and barely looked capable of attacking during a humiliating 5-0 thrashing for the Bhoys. He made 1 more poor showing on the opening day of the 2006/07 season, where he was as woeful as usual, before being sold to Derby County days later.
2. Du Wei
A loan signing from Shanghai Shenhua in 2005, the Chinese central defender was brought in by Strachan presumably to add to the impact of Celtic in the Asian market after the successful capture of Japanese playmaker Shunsuke Nakamura. The deal was a 6-month loan deal from August 2005, and judging by his one solitary appearance for Celtic, the supporters must have been delighted to see him thumped back home.
One solitary appearance for Celtic was enough for the fans, and perhaps most importantly the manager, to decide that he was simply not good enough for Celtic. That one terrible showing in a Celtic jersey came in January 2006 in an ill-omened Scottish Cup tie against Clyde at Broadwood. In 45 mind-boggling awful minutes, he had managed to get skinned nearly every time a Clyde player charged at him; he was caught out in the air, and was at fault for both goals that Clyde scored that day.
Du Wei was not given a second chance and was quickly knocked back to where he came from. A disaster who did nothing to benefit the club on or off the pitch apart from selling a couple of Celtic tops in China.
1. Rafael Scheidt
One could write a book on his dismal time at the club, which would have been more damaging had Martin O’Neill not drastically changed the club’s fortunes. Signed by John Barnes in December from Gremio for a huge fee of £4.8 million, Scheidt became the first Brazilian to sign for the club.
It was soon leaked, however, that Celtic had signed him because Barnes had watched him a couple of times on ESPN, and due to the fact that he had been capped by the Brazilian national team, signed him on the assumption that he would be brilliant….because he was Brazilian!!!
In his few appearances for Celtic, he looked like a shell-shocked war veteran with no grasp of what was going on around him, and with Martin O’Neill taking over at the helm, he was sent on loan back to Brazil before being let go. His time at Celtic was a farce and although injuries didn’t help, he never looked like a Brazilian international. The biggest waste of money in the club’s history and a cult hero to all of Celtic’s opponents.
Dishonourable mentions: Edson Braafheid, Ian Andrews, Vasilis Barkas, Juninho, Stefan Scepovic, Boli Bolingoli, Teemu Pukki, Thomas Gravesen, Shane Duffy, etc