René Bolf
... that footballer René Bolf won the Gambrinus Liga with Sparta in his first season with the club, but returned to his former club, Ostrava, during the following season?
... that <a href="./Association_football" id="mwAjA" rel="mw:WikiLink" title="Association football">footballer</a> <b id="mwAjE"><a href="./René_Bolf" id="mwAjI" rel="mw:WikiLink" title="René Bolf">René Bolf</a></b> won the <a class="mw-redirect" href="./Gambrinus_Liga" id="mwAjM" rel="mw:WikiLink" title="Gambrinus Liga">Gambrinus Liga</a> with <a href="./AC_Sparta_Prague" id="mwAjQ" rel="mw:WikiLink" title="AC Sparta Prague">Sparta</a> in his first season with the club, but returned to his former club, <a href="./FC_Baník_Ostrava" id="mwAjU" rel="mw:WikiLink" title="FC Baník Ostrava">Ostrava</a>, during the following season?