If Roy of the Rovers made a comeback as a defender , he would be an all-action Brazilian with electric hair , have 6.5million Instagram followers and call them all ‘ geezers ’ . The new comic book star would score a magnificent booming header against his former team , celebrate with a screaming knee slide , scrap with the evil baddie of the opposition ( Diego Costa ) and finish the struggle victorious , shaking hands with the ground staff before exiting for his next adventure . The problem for the script writers , if they were to copy the life and times of David Luiz , is that they would have no idea what David Luiz was going to do next , so what chance do the opposition – or his team-mates – have ? David Luiz jumps for joy after his bullet header forced the game in to extra-time on Wednesday night . Luiz celebrates victory with team-mates Thiago Motta ( right ) and Maxwell at the final whistle . When you expect Luiz to be heading it clear , he ’ s chasing the glory , when you expect him to be chasing the glory , he appears from nowhere to head it clear . Losing 7-0 in a World Cup semi-final , he still thinks he can get a goal back . Maybe a second . Who knows ? A hat-trick . On that occasion it finished 7-1 and the one-man reconnaissance mission broke down , leaving gaps behind him for the German team to exploit . Would it change his approach ? Of course not . Even on Wednesday night , with Paris Saint-Germain drawing 2-2 at Chelsea with minutes remaining and set to go through with 10 men on away goals , he turned up on the right wing to collect the ball and retain possession . Luiz looks on in disgust as Germany celebrate one of their seven goals in last summer 's World Cup semi-final . He ’ s a defender who sees defending as a part-time job . So concerned was Laurent Blanc , a World Cup-winning centre back with 97 caps , which suggests he knows a bit about defending , that he played Luiz in midfield in the first leg , with two centre backs behind him for cover . He was back in the back four for the second leg and , when it works , it works spectacularly . Who else could have got them through when their talisman , Zlatan Ibrahimovic , had been sent off ? Luiz could have been sent off too for his feuding with Costa , but instead he rose majestically in the land of the giants that is Chelsea ’ s penalty area to send a thunderball of a header into the roof of the net . The defender stumble backwards after one of many confrontations with Diego Costa on Wednesday night . To get ahead of John Terry , Gary Cahill or his marker Branislav Ivanovic takes great skill , movement and courage but to meet the ball with such ferocity… maybe there ’ s more to Luiz than his Sideshow Bob nickname and carefree style . Then came the celebration . Not just a former player quietly enjoying the moment against the club that sold him , but a full-pelt emotional surge of joy . He said he wouldn ’ t celebrate on his first return to Stamford Bridge , but who can blame him for loving the moment ? It was a goal worth celebrating . Chelsea sold him because they thought the deal was too good to refuse and , presumably , because they thought Terry and Cahill could do the job better . Few can argue with that – Terry , especially , has been magnificent as a defender this season but can he hit a dipping , swerving free kick , Cristiano Ronaldo style , from more than 30 yards , as Luiz did on Wednesday night ? Jose Mourinho has a word with Luiz on the touchline as PSG manager Laurent Blanc watches on . Luiz rises to beat Branislav Ivanovic to Thiago Motta 's corner and head home PSG 's equaliser . Not everyone is a Luiz fan – Jamie Redknapp wrote on this website that ‘ whoever struck the deal to sell Luiz for £50m deserves a knighthood ’ . And , as Chief Sports Writer Martin Samuel reported , Jose Mourinho thought Luiz was too much of an optimist as a defender . Samuel wrote : ‘ Mourinho wanted miseries at the back . He wanted players who feared the roof was about to fall in , the move was going to break down , a counter attack was only a stray pass away . Luiz wasn ’ t like that . He roamed , he left gaps , he charged upfield and if that break went wrong he thought it wouldn ’ t matter . He didn ’ t check for danger , he was rarely alarmed . Luiz was too much of an optimist to defend properly. ’ The optimist will make mistakes . He will raid upfield when he should be focussing on shutting the door , but he had a lot of fun at Stamford Bridge on Wednesday night and he ’ s still in the Champions League . Luiz has a moment of reflection as PSG progress to the quarter-finals of the Champions League .
David Luiz starred as PSG knocked Chelsea out of the Champions League . Luiz scored late equaliser with a bullet header to force game into extra-time . Chelsea sanctioned the £50million sale of Luiz to PSG last summer . Luiz celebrated wildly despite playing at his former Stamford Bridge home . READ : Luiz says sorry for celebrating after scoring against Chelsea . CLICK HERE for the latest Chelsea news and reaction to Wednesday night .