Please note, i said 'may' in the title but here goes.
So the shape is 3-5-2 and the principle behind the tactic is simple, the back 3 and 2 central MC's are set to a defensive mentality, the other 5 outfield players are then set to the same mentality which I suggest you adjust dependent on the opposition etc
You then have an AMC with a farrow to SC, the two SC's have side arrows whilst the MR & ML have arrows to the 'wide' amc positions.
I have only played as Real Madrid so i am not suggesting that this tactic will work for all teams.
My AMC is elano and since the start of the season when I invented this tactic he has played 18 games with 24 goals and 6 assists and an average rating of 8.11.
My overall record as a team in the league is played 14, won 10, drawn 3 and lost 1.
Early on in the season I was drawing too many games that i should have won so I have created a standard tactic and an attacking version. Use the standard as your template then tweak tempo, width and mentality etc as circumstances dictate.
3-1-4-2 standard 3-1-4-2 attack