JOSE MOURINHO’S arrival at Spurs has created a huge debate but my initial reaction was how decisive the club’s hierarchy had been.Talk of a power shift in north London has raged of late and this latest development feels significant.1 Mourinho’s swift arrival shows the difference in how the two biggest north London clubs are runCredit: PA:Press AssociationTottenham have reacted while Arsenal have stalled again.To discard a manager who will immediately be courted by Europe’s elite puts Daniel Levy’s decision under scrutiny — yet it feels right.I’m a big admirer of Mauricio Pochettino but his departure was inevitable.Levy put him out of his misery because the realisation that the ceiling had been reached had crushed the Argentine.Even the prestige of reaching a Champions League final and the Premier League’s financial muscle could not convince top players to join Spurs.IN DECLINEThis young vibrant team peaked in the final season at White Hart Lane and deteriorated from then on.The inferiority complex which Poch had fought so hard to rid Tottenham of eventually engulfed him.It was never the start of a new era at a wonderful new stadium as suggested — rather the end of one and that is how it has played out.Poch’s sniping comments and sullen demeanour were in stark contrast to his initial charm and focus.Poch wanted out and Levy knew it.SERIAL WINNERNineteen defeats in 2019 meant results as well as morale had been impacted and action was needed.Change, no matter how painful, is necessary at times and Spurs have been ruthless.A manager who won no silverware in five seasons has been replaced by a serial winner.In the 12 seasons since Spurs’ last trophy Jose has collected 13.ARSENAL FAIL TO ACTArsenal fans, in contrast, wish their club would show such leadership.Where once there was pride in loyalty to managers — Bruce Rioch aside — now it is utter despair.A lack of leadership permeates the club — in the boardroom where Arsene Wenger stayed too long, to the pitch where a five-man captain group proves they don’t have one!The notorious international-break manager cull appeared to have Unai Emery most vulnerable, with two wins in 10 games Arsenal’s worst league start since 1981.Yet the board believe he is still the right man.INITIAL IMPACTI was impressed by his initial impact in what was the most difficult job of all big six clubs.He established accountability for underperforming stars and improved fitness and tactical awareness.An impressive 22-game unbeaten run, although not without its vulnerabilities, showed promise.As the business end of last season approached it looked likely Emery would get the sixth-best team to third but Arsenal reverted to type.Captain Granit Xhaka’s declaration, ‘We had a great season apart from the last four weeks’, said it all.FLIP-FLOPPINGThis season Arsenal fans believe Emery has gone from the right track to repeating the same errors.Defensive issues remain but now his team has a distinct lack of creativity despite him spending £209m.So much so that Mesut Ozil — omitted from six consecutive squads — has now been brought into fold and a return today for outcast Xhaka’s has been mooted, a brave and potentially foolish decision bearing in mind the fans’ anger.If the team do not start well, can Emery trust his temperamental ex-captain not to react?Is his contribution to the team that important to risk a negative reaction?Perhaps that is strong leadership but feels more like desperation.JOSE SHAKE-UPMaybe desperation for trophies is behind Jose’s appointment. It doesn’t feel that way.Yes, a clash of personalities may well play out between him and Levy but the fact Mourinho believes Spurs can win the title next season says it all.Poch said last season that ‘trophies only build egos’ — exactly.The Special One will bring that sense of entitlement. Past loyalties will quickly be forgotten.George Graham managed Spurs. Rafa Benitez managed Chelsea.WHAT DOES THIS MEAN FOR UNITED?The merry-go-round will continue which makes Zinedine Zidane and Ole Gunnar Solskjaer vulnerable.Will United now be decisive? So often managerial changes are determined mainly by who is available.That Poch is now on the market poses a big question.Can United risk losing another boss as they did with Pep Guardiola and Jurgen Klopp? Do they just rip the plaster off now?MOST READ IN SPORTTHROUGH ITRobbie Keane reveals Claudine’s father was ’50-50′ in coronavirus battle’I ACCEPT’McGregor accepts Silva fight at UFC catchweight of 176lbs in huge super-fightTOP SELLERGavin Whelan has gone from League of Ireland to David Beckham’s InstagramPicturedA CUT ABOVEMike Tyson shows two-inch cut ‘picked up in training’ ahead of boxing returnExclusiveRIYAD RAIDMan City’s Riyad Mahrez has three luxury watches stolen in £500,000 raidPicturedAN EYEFULMeet Playboy model and football agent Anamaria Prodan bidding to buy her own clubArsenal have dithered to their detriment when potential successors could not wait for Wenger to step aside.United did it before with Louis van Gaal.Will they again?