Paris Saint-Germain believe they can beat Chelsea in the Champions League tomorrow night, writes David Shonfield.

Champions League last 16 First Leg

Celta Vigo stunned Atletico Madrid to bring the La Liga champions back down to earth after last week’s demolition of Real Madrid, winning 2-0 at Balaidos thanks to two second-half goals.

Germany and Argentina lock horns tonight in a repeat of July’s World Cup final but international retirements and injuries mean Joachim Low and Gerardo Martino will field much-changed sides from that memorable night in Rio.

Ger McCarthy outlines where a selection of Premier League clubs need to strengthen ahead of the new season and before the transfer window slams shut.

1. You reap what you sow — eventually

A thrilling World Cup packed full of stunning goals came to an end last night when Germany beat Argentina at the Maracana in Brazil to be crowned world champions for the fourth time.

The singing stops, Leo Messi is stifled, and a bad moon rises for Argentina.

Leo Messi looked worried, while Ezequiel Lavezzi couldn’t look at all.

Argentina eased into the World Cup semi-finals as a disappointing Belgium side made a low-key exit from the tournament.

Argentina 1 Switzerland 0 (aet)

Argentina 1 Switzerland 0 aet

Nigeria 2 Argentina 3

Nigeria 2 Argentina 3

Argentina 1 Iran 0

Chelsea 2 Paris St Germain 0 (3-3 on aggregate, Chelsea win on away goals)

Chelsea and Jose Mourinho dare to dream of European glory once more after dramatically overturning a two-goal deficit to advance to the Champions League semi-finals at the expense of Paris St Germain.

Jose Mourinho is rarely lacking in confidence and the Chelsea boss is firm in his belief that his side can overturn a two-goal deficit in Tuesday night’s Champions League quarter-final second leg with Paris St Germain.

It is not often that Jose Mourinho is lost for words but when it came to describing Chelsea’s poor defensive display in Paris on Wednesday night, you could sense the ‘special one’ had no answers to explain why the back five have crumbled in recent games.

Jose Mourinho issued a scathing assessment of Chelsea’s performance – and his strikers – after the 3-1 loss at Paris St Germain which leaves his side’s Champions League hopes hanging in the balance.

Paris St Germain 3 Chelsea 1

Chelsea's hopes of advancing from the Champions League quarter-finals hang by a thread after Paris St Germain claimed a convincing first leg win at the Parc des Princes.

You get the feeling that Jose Mourinho is now using every opportunity he can to persuade the Chelsea hierarchy he should be given the kind of money that tonight’s opponents Paris Saint-Germain have spent in thetransfer market if his side are to challenge for big honours once again.

Paris St Germain 2 Bayer Leverkusen 1 (PSG win 6-1 on agg)

Bayer Leverkusen 0 Paris St Germain 4

Paris St Germain have finally completed the signing of highly-rated Napoli striker Edinson Cavani for €64 million on a five-year contract.

Leonardo has tendered his resignation as sporting director of Paris St Germain and will leave the French champions at the end of August.

Paris St Germain director of football Leonardo insists the club have not made an offer for Cristiano Ronaldo or Wayne Rooney but said he could not rule out big buys this summer.

Barcelona 1 PSG 1 (Barcelona win on away goals after 3-3 on aggregate)

Barcelona 1 Paris St Germain 1 (3-3 on aggregate, Barca win on away goals)

PSG 2 Barcelona 2

Paris St Germain 2 Barcelona 2

Paris St Germain manager Carlo Ancelotti insisted his team were well worth their place in the Champions League quarter-finals after they edged past Valencia.

Valencia 1 Paris Saint-Germain 2

Details can make the difference, as managers always say.

Real Madrid recorded their sixth victory over Ajax in the last three seasons with an impressive display to win 4-1 at the Santiago Bernabeu.

German champions Borussia Dortmund made sure of their place in the knockout stage of the Champions League for the first time since 2003 with a comprehensive dismantling of Ajax at the Amsterdam ArenA last night.

Blackburn Rovers last night turned to Republic of Ireland striker Leon Best to fire them back to the Premier League as they signed the striker from Newcastle for more than £3 million.

Manchester City are not looking to reinforce their attacking options this summer, according to manager Roberto Mancini.

Branislav Ivanovic was Chelsea’s unlikely hero with the extra-time winner that means there is still one English club in the Champions League.

Chelsea 4 Napoli 1 (AET, Chelsea win 5-4 on aggregate)

“It’s like a final,” said Juan Mata yesterday of Chelsea’s match against Napoli.

Branislav Ivanovic has admitted Chelsea’s confidence is the lowest it has been in the past four years but insists Andre Villas-Boas still has the backing of the dressing room.

As the flares were lit around a raucous Stadio San Paulo in Naples, it was hard not to think that Andre Villas-Boas’ career as Chelsea manager was also going up in smoke.