A lack of offense is a major reason the Montreal Impact are still searching for their first win of 2014.
While the end of Marco Di Vaio's suspension marked the return of the club's top goal-scoring threat, the Impact pulled off a blockbuster trade to further increase their scoring chances.
The Impact (0-3-1) sent Andrew Wenger, the first overall pick in MLS's 2012 SuperDraft, to Philadelphia on Friday for McInerney.
The 21-year-old McInerney, who will not play against New York, led the Union in scoring with 12 goals in 31 league games last season after scoring a team-best eight league goals in 2012. He has one goal in four games this year.
"We are extremely pleased to be able to bring in a player of Jack McInerney's quality," Impact sporting director Nick De Santis told the team's official website. "At a young age, he's already showed the ability to score goals in this league and we feel his qualities and soccer sense fit well within our style of play."
McInerney joins Di Vaio who was suspended for the first three games of the season, but marked his return with a goal in the 80th minute of a 1-1 tie at Philadelphia last Saturday.
Di Vaio, who scored 20 goals in 2013, had nine shots against the Union, but his goal was the team's only one on target.
"That's why they're guys that you never take out. Because you know that they have one magic moment in them," coach Frank Klopas said.
Di Vaio has a goal in each of his three starts against New York.
Justin Mapp has one goal and two assists over his last five meetings with the Red Bulls. The midfielder enters this one with assists on two of Montreal's three goals on the season, including Di Vaio's last week.
New York (0-1-3) won its first major trophy last season, finishing with the regular season's best record at 17-9-8 to capture the Supporters' Shield. The team also led the league with 58 goals, but it's managed to find the net once in each of the four games this year.
The latest tally from Peguy Luyindula came five minutes into injury time and salvaged a 1-1 tie with Chivas USA at home Sunday.
"Let's put things in perspective: We tied Chivas at home," coach Mike Petke said. "A better Chivas team than last year, for sure, but we tied Chivas at home in the 90th minute, so that's not good enough."
The Red Bulls' attempt at showing improvement will come without midfielder Tim Cahill (hamstring) and defender Richard Eckersley (ankle).
They may also be without star forward Thierry Henry and defender Jamison Olave, who are routinely rested for games on artificial turf in an effort to avoid injury and preserve them for the longevity of the season.
Henry, though, has seven goals and three assists in four meetings - three wins - against Montreal. However, he hasn't played the Impact at Olympic Stadium.
"We traditionally know what goes on with these games," Petke said. "However, there's always that chance, there's always the situation that we have a conversation and decide that it's a go on this turf.
"I have total confidence in whoever jumps in if (Henry and Olave) are not going to go."
That could mean Luyindula replacing Henry, while Ibrahim Sekagya and Armando partner in central defense with Olave out. That was the scenario in a season-opening 4-1 loss at Vancouver, which also uses artificial turf.