Nigerian star Bart Ogbeche, who claimed an ISL double recently, completed his move to Hyderabad FC earlier this week.
Thapa tested positive on Wednesday. This was just a day before India lost 0-1 to Asian champions Qatar in their joint World Cup and Asian Cup qualifiers in Doha.
Ferrando believes it is tough to accept that they could not get a single win in their group stage matches.
FC Goa end their maiden AFC Champions League campaign with a 2-0 loss against UAE's Al-Wahda on Thursday at the Fatord stadium.
FC Goa were denied their first win of the ACL campaign by an Ali Ferydoon equalizer in the 89th minute.
F C Goa will play against Al-Rayyan at the Fatorda stadium on Monday night hoping to get their first win of the campaign.
FC Goa were outplayed by Persepolis FC at the Fatorda stadium on Friday night in their AFC Champions League Group E fixture.
F C Goa will take on Persepolis F C in its return leg Group E ACL fixture against Persepolis F C at the Fatorda stadium on Friday.
F C Goa to take on Perspolis at the Fatorda stadium on Tuesday in their third group match of their maiden AFC Champions League campaign.
F C Goa held Al-Wahda to a goalless draw on Saturday in their second match of the maiden AFC Champion League campaign at the Fatorda Stadium