Jose Mourinho would be the ideal appointment for Newcastle United if Eddie Howe was to leave.That’s the view of The Sun’s Head of Sport Shaun Custis as the current Magpies remains under pressure at St. James’ Park amid a worrying run of form.Howe could be heading into the final weeks of his Newcastle tenureGettyNewcastle lost 2-1 at home to Bournemouth on Saturday afternoon and are 14th in the Premier League, six points off the European spots.They have lost all of their last four matches in all competitions, a run that casts doubt over the future of Howe.He retains the support of the club hierarchy, but talkSPORT reported earlier this month that he could walk away at the end of the season.If Howe was to leave Newcastle, then it’s former Chelsea, Real Madrid and Manchester United boss Mourinho that Custis wants at the helm.“I’ve said it many, many times… I think he’s struggling,” Custis said of Howe on Sunday Edition.“I do feel it will be a very sad day when he leaves, but there is no doubt that there are no signs this is going to turn around at the moment.”He added: “For so many Newcastle fans, it will be a sad day if Eddie leaves, or when Eddie leaves… the character of the man, the way he’s embraced the fans, the way he came in and sorted things out, he’s done a fantastic job.“But, you know, maybe things just go in cycles and it’s time for a new man in charge.”Henry Winter then said: “You always have to say, ‘Who is better?’ Who would you bring in?“Mourinho’s the man,” Custis insisted. “He hasn’t lost a game in the Portuguese league this season (at Benfica), not one.”Custis would be keen to see the legendary Mourinho replace Howe if he leftGettytalkSPORT reported earlier in the week that Mourinho has admirers among the Newcastle hierarchy.Their owners are believed to be attracted to appointing a big name if Howe was to leave.Mourinho, a three-time Premier League winner, returned to Benfica in September after spending a season at Fenerbahce in Turkey.They are on a six-match unbeaten run in the Portuguese top flight, but sit third and seven points behind leaders Porto.If he was to join Newcastle, it would likely be an emotional occasion for Mourinho amid his links with the late Bobby Robson.He was an assistant coach at Barcelona to the former England international, who was a huge managerial success at the Magpies.Howe has won over half of his 226 matches in charge at NewcastleHowe has been Newcastle boss for just shy of five yearsGettyWill he stay or will he go Howe?It’s been four-and-a-half years since Newcastle named Howe as their manager after the takeover by the Saudi Public Investment Fund.The former Bournemouth boss has overseen a historical period in the club’s history, and most notably won the Carabao Cup last season.Newcastle have also qualified for the Champions League on two occasions during his tenure.However, this season could be his last in the dugout in the North East, bringing an end to what has been an impressive stint.