Philipp Lahm has given former Bayern Munich team-mate Owen Hargreaves an insight into the meticulous approach of  manager Pep Guardiola ahead of the club's Champions League quarter-final tie against Porto. The World Cup winner was speaking to the BT Sport pundit as part of a special documentary 'Inside Bayern Munich with Owen Hargreaves' which airs Saturday at 10pm on BT Sport 1. 'His tactical understanding is incredible,' Lahm explained. 'He always gives our team solutions to playing the opposition. VIDEO - Scroll down to see a preview from 'Inside Bayern Munich with Owen Hargreaves' Bayern Munich man Philipp Lahm (left) talks to former team-mate Owen Hargreaves about his career so far . Lahm (right) and Hargreaves played together at Bayern when Hargreaves was at the club from 2000-2007 . The former Bayern midfielder speaks with Karl-Heinz Rummenigge, the Bayern chairman . Lahm lifts the World Cup with Germany (left) and praised his Bayern manager Pep Guardiola (right) 'He prepares for every opposition completely differently. How flexible our team has become, with a back 3, back 4 or back 5.' Lahm  dissected the differences in approach between Guardiola and his predecessor, Jupp Heynckes, who masterminded a Bayern treble in 2013 before retiring from coaching. 'With Heynckes in 2013, in the big games we played quite defensive on the counter attack. Everybody worked together as a group, we invested a lot of energy in the games,' Lahm said. 'Now under Pep it's more tactical and we have more possession but not like previously when we had a lot of possession but we didn't have any clear scoring opportunities. 'The goal is to go forward and create scoring opportunities. To press very high. To win the ball back very quickly. But to do that you need a clear plan and the daily work on the pitch.' At the age of 31, Lahm is one of the most decorated and accomplished players in modern football. He already has six Bundesliga winners medals, with a seventh seeming certain to follow with Munich ten points ahead of Wolfsburg with six games remaining. Aside from a two-year loan spell at Stuttgart, Lahm has spent his entire career at Bayern but confessed to Hargreaves that he did not ever anticipate the success he has had. Jupp Heynckes led Bayern to a treble in 2013 before retiring from coaching, and was succeeded by Guardiola . Lahm celebrates winning the Bundesliga (left) and the Champions League in 2013 . 'I came at 12 in 1995 and everything's a dream,' Lahm said. 'It's a dream to become German champion, to become a German national player but that it all happened, German champion, Champions League winner, captain of the club, to play for the national team, it's not something that you can plan. 'Maybe eventually it becomes a goal but at the beginning, that's what it is, just a dream. 'For me this is my home. I'm born in Munich, I grew up here, I've been at Bayern Munich since I was 12 years old besides the two years in Stuttgart. 'I might have won the Champions' League earlier with another club but the value of winning the Champions League with my club is much more valuable.' Lahm has demonstrated a versatility both for Germany and Bayern that points to a heightened understanding of the game. He has played at right-back, left-back and as a defensive midfielder with club and country, leading to many earmarking him as a future Bayern manager. The idea is not one Lahm, who is contracted at the club until 2018, rejects but he is still focused on attaining more titles with as a player, starting Wednesday at Porto. Lahm (left) has played at Munich his whole career but had a two-year loan spell at Stuttgart . Lahm (right) is currently gearing up to take on Porto in the Champions League quarter-final on Wednesday . Lahm (right) also spoke to Hargreaves about his career where he has won many trophies and become captain . 'It's nice that people talk about me in other positions at the club,' Lahm admitted. 'I've got another three years at the club, let's wait and see what happens then. 'Of course I can imagine myself staying here after I've finished playing, that goes without question.' The former Bayern midfielder Hargreaves talks to insiders at the German club in the programme, including Karl-Heinz Rummenigge, Lahm and Xabi Alonso and looks back at his own time there. Watch 'Inside Bayern Munich with Owen Hargreaves' on BT Sport 1 this Saturday at 10pm.
Philipp Lahm spoke to Owen Hargreaves for an upcoming documentary .
Lahm spoken of his career to date and plans for when he stops playing .
He hailed Pep Guardiola's tactical nous and aggressive playing style .