23/08/2011 19:30 +0100 – Samir Nasri is due to complete his big-money move from Arsenal ahead of Sunday's meeting with Tottenham after it was confirmed City had agreed terms with the France international. Nasri will become the latest expensive new recruit to join the City revolution, which has cost Sheikh Mansour well over £1billion since he completed his buy-out four years ago. This summer alone, Mancini has bought defensive duo Gael Clichy and Stefan Savic, in addition to splashing out a club record £38million on Sergio Aguero. Nasri's arrival will swell his squad even further, and cause more head-scratching among supporters in debates over what Mancini's preferred line-up is likely to be. The whole selection issue would appear fraught with difficulty given the huge reputations involved. Emmanuel Adebayor and Craig Bellamy head a list of players already told they have no future at City - but have thus far resisted the temptation to leave - and even if they depart Mancini will have far too many players for the available places in his team. However, after starting the Premier League campaign with two impressive wins, Mancini only needs to think about Thursday's Champions League group stage draw, when City are set to be named among the third seeds, and know on Saturday he will discover who his side's opponents will be in the Carling Cup third round to know why such options are essential. "It is no problem for me," Mancini told mcfc.co.uk. "The problem is if you don't have good players. "For the manager it is not easy because all the players want to play every game. "But when you play in four competitions and have a match every three days, there is space for everyone. "Sometimes it is important that you rest. It is impossible to play a top game every three days. "And the Champions League is very hard. It is different from the Europa League. "For this we need a good team, with good players and a good mentality." The additional problem for City in relation to the Champions League is that unlike Chelsea and Manchester United, whose top seeding guarantees an easier draw and an opportunity to rest key men, they will have to face one of Europe's elite. In a worst-case scenario that would be holders Barcelona, and in the best it would be Europa League winners FC Porto. Yet both would require key men to be involved, with points at stake in the Premier League on either side of European games. That is why Mancini was so desperate to get Nasri. Although he did not get his wish of having the midfielder signed at the start of pre-season, he has finally managed to push the deal forward enough to ensure Nasri did not board the plane to Italy for Arsenal's trip to Udinese despite training with the Gunners on Tuesday morning. "We need to improve," reflected Mancini. "We need to work. "After just one year it is difficult to think we can be 100 per cent as a team."