Baby Boy is right, competition is really really slow right now. It might sell around (or less) than WB first week, but it might be enough for a higher debut (ie. top ten). I mean...
Digital sales T10
Mark Ronson f/Bruno Mars, “Uptown Funk!” – 165k
Maroon 5, “Sugar” – 143k
Ed Sheeran, “Thinking Out Loud” – 129k
Ellie Goulding, “Love Me Like You Do” – 114k
Rihanna, “Bitch Better Have My Money” – 108k
The Weeknd, “Earned It (Fifty Shades of Grey)” – 107k
Rihanna, Kanye West & Paul McCartney, “FourFive Seconds” – 100k
Flo Rida f/Sage the Gemini, “G.D.F.R.” – 99.5k
Walk the Moon, “Shut Up + Dance” – 93k
Petty Wap, “Trap Queen” – 91k
Anywhere upwards of 100K might be enough for a T5 debut on Digital Songs, together with streams and the (likely) radio deal, that could be a top ten debut.