( CNN ) -- Pep Guardiola surely faces the most thankless task in world football after Bayern Munich clinched a historic treble on Saturday , adding the German Cup to the Champions League and Bundesliga crowns . The Spaniard , who was named as Bayern 's next coach back in January , will take over a team that has conquered Europe and its domestic rivals , with the 3-2 win over Stuttgart giving the departing Jupp Heynckes a perfect sendoff . The 68-year-old is widely expected to retire , though he has also been linked with a return to Real Madrid -- where he won the Champions League in 1998 -- after guiding the Bavarians to 45 wins from 53 matches this season . Stuttgart never looked like inflicting Bayern 's fourth defeat of the campaign after going 3-0 down after an hour , with Thomas Muller netting a first-half penalty and striker Mario Gomez scoring twice against his former club in what could prove to be his final game for Bayern . Austrian Martin Harnik struck twice to give Stuttgart hope in front of more than 74,000 fans at Berlin 's Olympic Stadium , but Bayern held on for a 16th victory in the knockout competition to become the first German side to complete such a treble . Guardiola helped Barcelona become the first Spanish club to win a hat-trick of titles in 2011 , but was unable to follow that up last season before standing down . Barca completed this season in style on Saturday , beating Malaga 4-1 to equal Real 's points record of 100 and beat the club 's best goals tally -- scoring 115 in 38 La Liga games . Striker David Villa , Cesc Fabregas and young defender Martin Montoya all netted within 16 minutes , while veteran midfielder Andres Iniesta curled in a spectacular second-half effort before substitute Pedro Morales pulled one back for Malaga . Eric Abidal came on to make his final appearance for Barca , with the French defender being released despite making his comeback in April following a liver transplant . Villa 's future is also in doubt , with Barca having signed Brazil forward Neymar from Santos last week . Malaga manager Manuel Pellegrini is also on the move , being widely expected to join English club Manchester City . The Chilean announced last month that he is leaving the Spanish club , which ended the season in sixth place and reached the Champions League quarterfinals . Jose Mourinho 's three-year tenure at Real Madrid ended with a 4-2 win at home to Osasuna , which left his second-placed side 15 points behind Barcelona . The Portuguese coach , who is expected to rejoin English club Chelsea , was booed by large sections of home fans before the match -- though others held banners thanking him -- and he was surrounded by photographers every time he ventured from the dugout . He has divided opinion at the Santiago Bernabeu after being unable to follow up last season 's title , or deliver Real 's long-awaited 10th European title -- and the Copa del Rey final defeat against Atletico Madrid was the last straw as he agreed to leave by mutual consent . Despite Mourinho 's apparent dressing room rift with former captain Iker Casillas and other key Spanish players , Real defender Alvaro Arbeloa said the 50-year-old deserved respect . `` We respect his decision , the club 's too , and wish him well . We all know that we have taken a major leap in competitiveness and we knew we could have achieved a lot , but due to small details or bad luck it was not to be , '' Arbeloa said . `` He has had his successes and failures , as we have all had , but he gave his all and defended Real Madrid above everything . '' Real Sociedad snatched a place in the Champions League qualifying rounds , winning 1-0 at Deportivo la Coruna to ensure Valencia missed out after a 4-3 defeat at Sevilla . Striker Alvaro Negredo scored all four goals for mid-table Sevilla as visiting Valencia dropped to fifth place despite a second-half double from forward Roberto Soldado . The defeat relegated second bottom Deportivo , while Mallorca also went down despite winning 4-2 against Valladolid . Celta Vigo moved out of the bottom three with a 1-0 win over Espanyol , but Zaragoza ended the season at the foot of the table after losing 3-1 at home to third-placed Atletico .
German Cup final victory gives Bayern Munich a hat-trick of titles this season . Mario Gomez scores twice in 3-2 victory over his former club Stuttgart . Germany win the European Championship for only second time since 1958. Jose Mourinho 's three-year reign at Real Madrid ends with home victory .