In the 2005–06 season, Mourinho helped Chelsea successfully defend the Premier League title and won the Community Shield. Although he failed to make a breakthrough in the Champions League, Abu's trust in Mourinho is still there, and it can be said that Mourinho and Abu are in a honeymoon period at this time. However, in 2005, Abu handed over Chelsea's youth management to Arnessen, which was seen as a way to reduce Mourinho's power at the club and became the first shadow in the relationship between the two sides. In the summer of 2006, Abu could not help but meddle in the transfer affairs of the team, he brought in two superstars for Chelsea, Shevchenko and Ballack, but was strongly opposed by Mourinho, and even defied Abu's order to put the two on the bench, which also caused a rift in the relationship between Abu and Mourinho. Mourinho made it clear at the time: "If Abramovic forced me to use a player, I would leave Chelsea", and Abu could only make a statement, "I never interfere in the affairs of the team, let alone how the manager uses the players." While I can't say that I was completely uninvolved in the buying and selling of players, it's safe to say that my role in it is insignificant compared to Mourinho. If the coach doesn't want to bring in a player, I'm definitely not going to force him, I can't do that. But in an interview in December 2006, Abu revealed: "Mourinho is not my friend, although we have a good relationship." In general, I have a lot of respect for him, and it's not just because of what he's accomplished in coaching. ”
Abu then tried to interfere with the power of the Mourinho, publicly pressed for Shevchenko to play the main force, but the madman was not moved, but criticized Abu for not appearing in the team's locker room for a long time after the game, which led to an intensification of contradictions between the two sides. Subsequently, the rumors that Mourinho may be dismissed were constantly reported by the media, and Real Madrid and the English national team were regarded as the teams that Mourinho might coach after bidding farewell to the Blues. Abu and Mourinho then quarreled over transfer issues in January 2007, when Mourinho wanted the club to add defenders through reinforcements, but Abu refused the madman's request, and the media exposed an argument between the two.
But after Chelsea's 3-0 win over Nottingham Forest on 28 January, Mourinho sent a signal of reconciliation, saying publicly: "I will fulfill my contract until 2010, which is a very important thing. I'm the head coach today, and by the end of the season I believe I will be, until 2010. I've seen some reports of disagreements between me and Romain, but that's definitely not true. Romain has been out of London for a long time, but he is the club's president and he doesn't tell us too much about his private life. When he comes back to London, we always welcome him between us, to the team's dressing room. ”
It wasn't until The FA Cup semi-final between Chelsea and Blackburn in April 2007 that Abu finally came to cheer on Chelsea. After Chelsea struggled to qualify for the final through extra time, Abu took the initiative to hug Mourinho in front of the media after the game. Mourinho said: "I had a few words with Romain outside the press room, I gave him a hug and he gave me a hug. I said 'congratulations to you' and he said to me 'congratulations'. This is normal. The relationship between the two has finally eased, and Mourinho has also led Chelsea to the FA Cup this season, slightly making up for the regret of missing out on the Champions League and the Premier League.