 Complete the following phrase:  In the late 1990s, the club played two consecutive seasons in the UEFA Champions League group stage. In the 199899 season, they were drawn in a group with Ajax, Olympiacos and Porto. After disappointing performances in the first three matches, in which they managed to draw against Ajax at home and lost their away matches against Olympiacos and Porto, they performed well in the remaining three matches, beating Porto at home and Ajax away, as well as drawing Olympiacos at home. However, they failed to advance to the quarter-finals as the second-placed team behind Olympiacos. In the 19992000 season, they were drawn in a group with 