Former managers, teammates and clubs have paid glowing tributes to Petr Cech after the Arsenal goalkeeper announced that he will retire at the end of the season.Cech, who won four Premier League titles, four FA Cups, the Champions League, the Europa League and three League Cups with Chelsea, will hang up his gloves at the end of his 20th year as a professional.The 36-year-old’s former Blues boss Jose Mourinho told Sky Sports News: “I am honoured to have been the manager that, at such an early age, gave Petr a top Premier League number one shirt.“After that day it is all about him."All about his numbers, his performances, his clean sheets, his titles and his professionalism."It’s a big loss for football, but history can’t be deleted."Many congratulations on such an amazing career.”Chelsea also reacted to Cech’s announcement with a fitting tribute on their website, writing: “Chelsea great Petr Cech has today announced he will be retiring at the end of the season, bringing the curtain down on an incredible career in which he won every major trophy with the Blues, including most famously the Champions League in 2012.“Cech, who has been at Arsenal for the past three-and-a-half years, moved to Stamford Bridge in the summer of 2004 and remained first-choice 'keeper between our posts for a decade, maintaining such high levels of performances that he will be remembered not just as our best-ever goalie, but also as one of the greatest goalkeepers of all time.“The 6ft 5in former Czech Republic captain won four Premier League titles during his time in west London, keeping a record 21 clean sheets during the first of those in 2004/05.“Cech, now 36, also won the FA Cup on four occasions, the League Cup three times, the Europa League once and, most memorably of all, the Champions League in 2012, when his three penalty saves played a massive part in us lifting the trophy we craved most of all.”