I think the op has been taking his opinions from Wikipedia as this paragraph shows;
"Rijkaard had a disappointing start at Barcelona that saw some sections of the club's fans call for his resignation, and he drew flak from the media when the team lost to Real Madrid in December 2003.[4] Rijkaard's resilience won through and from 2004 onwards, he achieved a massive turnaround, as the team went from strength to strength. Barcelona finished runners-up in La Liga in 2003–04, having been close to the relegation zone at one point in the earlier stages of the season. Rijkaard then took Barcelona to the next level as he phased out the old guard and rebuilt a new look side around Ronaldinho, with new players like Deco, Samuel Eto'o, Rafael Márquez and Ludovic Giuly, along with the ultimate uprising of some young players from the previous era formed in the club's youth teams (i.e. VÃctor Valdés, Carles Puyol, Xavi and Andrés Iniesta). He eventually succeeded in turning around the fortunes of the club, with the strong support of Laporta, and within the next couple of years finally managed to win La Liga both in 2004–05 and in 2005–06."
....which, as stated, is an argument for keeping Hughes, not for getting rid of him.
"Rijkaard had a disappointing start at Barcelona that saw some sections of the club's fans call for his resignation, and he drew flak from the media when the team lost to Real Madrid in December 2003.[4] Rijkaard's resilience won through and from 2004 onwards, he achieved a massive turnaround, as the team went from strength to strength. Barcelona finished runners-up in La Liga in 2003–04, having been close to the relegation zone at one point in the earlier stages of the season. Rijkaard then took Barcelona to the next level as he phased out the old guard and rebuilt a new look side around Ronaldinho, with new players like Deco, Samuel Eto'o, Rafael Márquez and Ludovic Giuly, along with the ultimate uprising of some young players from the previous era formed in the club's youth teams (i.e. VÃctor Valdés, Carles Puyol, Xavi and Andrés Iniesta). He eventually succeeded in turning around the fortunes of the club, with the strong support of Laporta, and within the next couple of years finally managed to win La Liga both in 2004–05 and in 2005–06."
....which, as stated, is an argument for keeping Hughes, not for getting rid of him.