Henry and Iniesta were traveling with the team to Rome on Tuesday, a day after taking part in their first full training session since picking up separate leg injuries earlier this month.
The puzzle is coming together for the Spanish champions in time for Wednesday's match between two of the world's best clubs.
"They are two basic footballing pieces in our scheme," Barcelona midfielder Xavi Hernandez said. "We know they're going to play, that they'll be 100 percent, and to have them is a privilege because with them we're better."
Both players have been key to the offensive juggernaut that has scored 151 goals in collecting two trophies this season.
Iniesta's injury-time goal against a staunch Chelsea side earned Barca its sixth trip to the final; it has won the cup twice. The Spain midfielder, recovering from a thigh injury, abandoned his usual reserved nature when it came to deciphering the final.
"United are the defending champions, one of the best, but they don't scare me. I have the same respect for them as they have for us," Iniesta said. "It's a chance to go down in history. I'd accept winning on penalties."
Based on their training methods, that's something Barcelona is not exactly ready for.
"We haven't practiced them," Xavi said. "I think to do that is ridiculous because you can't emulate the tension of a game in a training session."
Henry has combined with Lionel Messi and Samuel Eto'o to net a league-record 71 goals by a trio. But Iniesta provides an integral midfield piece to rookie coach Josep Guardiola's philosophy: attacking, possession soccer borne out by midfielders Xavi and Iniesta.
The two players are straight out of the mold of Guardiola, a former midfielder who orchestrated Barcelona to 10 major titles from that role, including in the Champions League in 1992.
"This is special for us because we played the best football," Xavi said after the club secured its 19th league title. "I have never seen (a team) play at this level, I have never played in a better team. We have individuals but, above all, we've won as a team. I'm proud."
But the absence of several defenders has left Barcelona's defense exposed against a team that knocked it out at the semifinal stage last year.
With fullbacks Daniel Alves and Eric Abidal suspended and center back Rafael Marquez injured, midfielder Yaya Toure will likely partner with former United player Gerard Pique in the middle as he did against Chelsea, then against Athletic Bilbao in the Spanish Cup final. Captain Carles Puyol and 35-year-old Silvinho are likely to fill in on the wings.
"What I must value is how Rooney, Tevez, (Paul) Scholes, etc., work," Iniesta said. "Rooney played left back against us. To win a final against United you can't make any mistakes."
Source: AP News