With Celtic stuck in a terrible rut this season, there is surely only one solution; sacking Neil Lennon.

The Northern Irishman has stated that he won’t depart Parkhead unless he’s given the boot which judging by the hierarchy’s support for him, seems far-fetched.

A plethora of names have been linked with the hot seat with Rafa Benitez and Frank Lampard being talked up in recent weeks.

Though, one name mentioned in November was former RB Leipzig boss Ralf Rangnick. Derek Rae commented that in order for Celtic to bring him to Glasgow, he needed to be appealed by the project.

He’s already rejected Chelsea so a move to Scotland is surely within the realms of fantasy, certainly for the time being.

Though, if he does eventually replace Lennon, he could be game-changing for Christopher Jullien. The 62-year-old is one of the most meticulous coaches about and was the pioneer behind the modern-day press. His teams must win the ball back within eight seconds of losing it if they are to be successful.

It’s a style of play that has been adopted right across Europe with many of the world’s best teams – Liverpool and Bayern Munich for example – using it to their advantage.

He also has a particular favouritism towards set-pieces. Writing on the Coaches Voice, Rangnick declared that you needed all five elements of football to be the best. One of those elements was set-plays.

“Set-pieces, both in offence and defence. More than 30 per cent of goals are being scored from corners, free-kicks and penalties,” he wrote.

A third of training isn’t dedicated to their practice but with Rangnick that is different. So, why could the manager turn Jullien into a star?

Well, he has a habit of scoring goals from set-pieces. The Frenchman scored seven times last term following his £7m switch and his ability to find the net has been well noted by Lennon.

He said last term: “When we looked at Jullien, scoring goals was something we thought he could do in Scotland and Europe. He’s a threat and he has worked on it as he wants to get on the end of things.”

“He’s brave and puts his head on things in both boxes."

Celtic have scored the joint-most goals from set-pieces this season (11) and that’s without putting a strict focus on it. Coincidentally, that’s also come in a campaign where Jullien has spent a large portion out injured.

Rangnick may have been described as a “very demanding” coach by former RB Salzburg CEO Jochen Sauer but the intricate details and clever philosophies he uses are phenomenal. The way RB Leipzig have developed, he helped change the face of the football club.

He could very much do the same at Celtic, and in turn, make Jullien even better and help him reach a new level. Rangnick is a must-have coach for majority shareholder Dermot Desmond.

AND in other news, Celtic could fix a big problem by hiring manager who left Rodgers "really impressed"...