Question: What Swiss football club based in Basel did Thomas Häberli join in July 2000?

Context paragraphs:
SV Schaffhausen: SV Schaffhausen is a Swiss football club based in Schaffhausen, in the north of the country.  It was founded in 1922.  The club colors are black and white.  The club nickname is "Spielvi."  The club operates a total of twenty teams, including 4 men's teams and 16 junior teams.  They are known to be more active within local football than their bigger local rivals FC Schaffhausen.  They currently play in the Swiss 1.  Liga, the third tier of Swiss football.

2014–15 FC Basel season: The 2014–15 FC Basel season is the 122nd season in club history and the club's 20th consecutive season in the top flight of Swiss football.  Basel are the reigning Swiss Super League champions.  They prepared their season with various warm-up matches against teams from Switzerland, Austria and Czech Republic.  Their 2014–15 Swiss Super League season began on 19 July with an away game against Aarau.  Basel were qualified to the 2014–15 UEFA Champions League in the group stage.  They were drawn into Group B against Real Madrid, Liverpool and Ludogorets Razgrad and started on 16 July with the away tie against Real Madrid at the Santiago Bernabéu Stadium.  In the first round of the 2014–15 Swiss Cup, played on 23 August 2014, Basel were drawn away against CS Italia.  The final was played on 7 June 2015.

2012–13 FC Basel season: The 2012–13 FC Basel season is the 120th season in club history and the club's 18th consecutive season in the top flight of Swiss football.  Basel started their season with various warm-up matches against teams from Switzerland, Romania and Germany.  Their 2012–13 Swiss Super League season began on 13 July with the away tie against Servette FC and they started in the 2012–13 Swiss Cup first round on 15 September with the away game against FC Amriswil.  Basel entered the Champions League in the qualifying phase and were drawn against Estonian club Flora Tallinn.  This and the following qualifying round were overstood, however in the play-off round Basel lost both games against CFR Cluj and were knocked out.

List of FC Basel players: FC Basel 1893 (Fussball Club Basel 1893) is a Swiss football club based in Basel, Switzerland.  This is a list of footballers who have played for FC Basel since the club was first founded.

FC Concordia Basel: FC Concordia Basel is a Swiss football club based in Basel.  The club was founded in 1907.  They play in the 2nd regional league which is the fifth level, and their home stadium was Rankhof Stadium until season 2008/9.  FC Concordia Basel builds the farm team of FC Basel.

2013–14 FC Basel season: The 2013–14 FC Basel season is the 121st season in club history and the club's 19th consecutive season in the top flight of Swiss football.  Basel are the reigning Super League champions.  They started their season with various warm-up matches against teams from Switzerland, Serbia and Germany.  Their 2013–14 Swiss Super League season began on 13 July with the home tie against FC Aarau and after the first six rounds they occupied just the fourth position in the league table, six points behind the leader Young Boys Bern.  Beating the Young Boys in the seventh round, Basel started a run of 29 league games without defeat.  At the end of the season Basel won the league championship for the fifth time in a row.  They started in the 2013–14 Swiss Cup first round on 17 August with the away game against BSC Old Boys.  Beating the Old Boy (1-0 after extra time) and after beating Münsingen 1–0 in the next round, they faced Tuggen in the third round, winning 3–1.  In the quarterfinals they played in against FC Le Mont, winning 6–1 and qualified for a semifinal home tie in St. Jakob-Park against Luzern on 26 March.  They reached the final, but were beaten 2–0 by Zürich after extra time.

2006 Basel hooligan incident: The 2006 Basel hooligan incident (often called "Disgrace of Basel") occurred on 13 May 2006 in Basel, Switzerland.  On that day hooligans supporting the Swiss football club FC Basel 1893 stormed the field of the St. Jakob-Park after a championship-deciding match against the FC Zürich.  FC Zürich scored in the dying moments of the match and won 2–1.  The goal ended the dream of Basel winning the Swiss Super League a third time in a row.  This resulted in property damage and riots between hooligans of both the FCB and their rival supporters after the match.  This riot is considered as one of the worst incidents involving hooliganism in Swiss sport to date.

Thomas Häberli: Thomas Häberli (born 11 April 1974 in Lucerne, Switzerland) is a retired Swiss football striker who last played for BSC Young Boys in the Swiss Super League.  He joined the club from FC Basel in July 2000.  He has made at least 28 league appearances in each of his seven seasons at the Bern club.

FC Zürich: Fussballclub Zürich, commonly abbreviated to FC Zürich, FCZ or simply Zürich, is a Swiss football club based in the city of Zürich and currently playing in the Super League, the first tier in the Swiss football league system.  The club was founded in 1896 and has won the Swiss Super League 12 times and the Swiss Cup nine times.  The club won the 2009 Swiss Super League and last won the Swiss Cup in 2016.  They play their home games at the Letzigrund in Zürich, which seats 25,000 spectators.  For the women's team see FC Zürich Frauen.

FC Basel: FC Basel 1893 ("Fussball Club Basel 1893"), widely known as FC Basel or just Basel, and sometimes referred to as FC Basel in English or FCB, is a Swiss football club based in Basel.  They are one of the most successful clubs in Swiss football, having won the Swiss Super League 20 times, the second most for any Swiss club.

Supporting paragraphs: Thomas Häberli FC Basel
Answer: FC Basel