Actually I doubt if Galatasaray will be able to win Sparta Prague because Sparta Prague is very much in a good form since the beginning of this season till now because if you check there last 12 matches they have played, they won all the matches, so actually Sparta Prague has really proven to every team on this season that they have all it takes to go far. Although Galatasaray on the other hand is also very much in a good performance on this season because they have made a great impact this season but the truth remains that this there match against Sparta Prague is gonna be very difficult to predict.
In five days the playoffs will be held, we will see the Turkish League and Czech League teams face each other. In the first leg, the match will be held at Rams Park, Galatasaray's headquarters. talking about Sparta Prague, as you said. if Sparta has played its matches with wins in its 12 matches. unfortunately, the 4 matches they played were friendly matches. plus, what was crucial was when Sparta played their match in the Europa League group phase. their performance was not good enough, 3 wins, 1 draw, 2 losses. plus, the teams that were their opponents in the Group C phase were not strong teams.
On the other hand, Galatarasay also played an impressive match. Galatasaray last lost when they visited Copenhagen's headquarters in the Champions League group stage. after that, Galatasaray almost always got full points in every match. well, if I had to compare based on my personal point of view. in fact, it is Sparta who have to prepare for the next match which they will play in Turkey, Rams Park, Galatasaray's headquarters. because it is not an easy matter for the away team to beat the home team in the first leg. moreover, if I refer to Asian Handicap Betting for a while, Galatasaray is ahead with an odds margin of 0:3/4.
Based on European betting exchanges, Galatasaray with odds @1.76 and while Sparta Prague with odds @4.60. It seems clear, there is a gap presented based on the odds and statistics that I said. Let's just wait, when this match takes place, but if I may speculate for now, Galatasar will win the match over the opposing team in the playoffs.