"I don't like the club spending so much on these players," said Mancini.
"If we had moved earlier and more quickly [to get them off the books], we would have spent less money.
"I did not buy these players and I can only answer for the players that I buy. I tried with these players two years ago but they are not part of my plans now.
"I am sorry about this because I respect these players, but it is better that I am clear with them."
Adebayor is still likely to leave for Tottenham, although the deal is not as imminent as has been suggested. Celtic manager Neil Lennon said this week he would be interested in Santa Cruz, although Bellamy's wages made his return to Celtic Park unfeasible.
Tevez may still play for Manchester City but is unlikely to start at Bolton tonight (NZ time) because of his exertions in the Copa America.
When it was pointed out to Mancini that Luis Suarez, who unlike Tevez played in the final, had started Liverpool's opening game of the season, the City manager replied that, unlike Suarez, Tevez had gone onholiday after the tournament.
"There are reasons why Carlos wants to leave," said Mancini. "I respect his reasons but if we don't close a move for him, he will stay with us."
Mancini dismissed the thought of a sullen, disruptive Tevez hanging around the training ground, trying to negotiate a way out of the club. "I don't think so because he is a professional player and he knows the rules. He knows that, if he wants to leave the club, he can, but at the moment there is no other club prepared to pay his value. Carlos knows he might have to stay but, if he does, his mentality will be good."
Manchester United will be without both first-choice central defenders for Monday night's encounter with Tottenham.
Both Rio Ferdinand and Nemanja Vidic were injured in last Sunday's 2-1 win at West Bromwich Albion.
Ferdinand's hamstring is expected to heal for the home game with Arsenal on August 28. Vidic's calf will keep him out for four to five weeks, making it unlikely he will feature against Chelsea on September 18.
- INDEPENDENT