Question: Which Czech retired footballer who operated as either a central defender or a right back was among the highly rated players to sign up for Fiorentina?

Context paragraphs:
Alain Goma: Alain Goma (born 5 October 1972) is a French retired footballer who played as a right back or a central defender.

Luis Carlos Cuartero: Luis Carlos Cuartero Laforga (born 17 August 1975) is a Spanish retired footballer who played as a right back or a central defender.

Oleguer Presas: Oleguer Presas Renom (born 2 February 1980), known simply as Oleguer, is a Spanish retired footballer.  Primarily a central defender, he could also operate as a defensive right back.

José Carlos Granero: José Carlos Granero Granero (born 27 May 1963) is a Spanish retired footballer who played as a right back or a central defender, and is a current manager.

2004–05 ACF Fiorentina season: ACF Fiorentina returned to Serie A, following a two-year absence after the bankruptcy of the previous incarnation of the club.  Fiorentina returned only due to the expansion in terms of the number of top-league teams, and therefore had to significantly strengthen the squad in pre-season.  Dario Dainelli, Giorgio Chiellini, Hidetoshi Nakata, Fabrizio Miccoli, Martin Jørgensen, goalkeeper Cristiano Lupatelli, Enzo Maresca, Tomáš Ujfaluši and Javier Portillo were among the highly rated players to sign up for Fiorentina, either permanently or on loan.  With this squad, Fiorentina was expected to challenge for a place on the top half of the table, but slipped into the relegation battle that affected more than half of the Serie A clubs during the dramatic season.  In the end, a strong finish to the season under incoming coach Dino Zoff saved "La Viola" from relegation, with an emotional 3–0 victory against Brescia confirming their survival.

Iñaki Descarga: Iñaki Descarga Retegui (born 25 August 1976 in Irun, Basque Country) is a Spanish retired footballer.  Mainly a central defender, he could also operate as a right back.

Héctor Berenguel: Héctor Berenguel del Pino (born 11 October 1974), known simply as Héctor, is a Spanish retired footballer who played as a right back or a central defender.

François Modesto: François Joseph Modesto (born 19 August 1978) is a French retired footballer.  He operated as a right back or central defender, and also as a defensive midfielder.

Daniel João Alves Faria: Daniel João Alves Faria (born 29 March 1987 in Braga) is a Portuguese retired footballer who played as a right back or a central defender.

Tomáš Ujfaluši: Tomáš Ujfaluši (] , born 24 March 1978) is a Czech retired footballer.  He operated as either a central defender or a right back.

Supporting paragraphs: 2004–05 ACF Fiorentina season Tomáš Ujfaluši
Answer: Tomáš Ujfaluši