Before discuss what the Rockies could send in return, you may ask what Gallo’s stats look like in 2018 thus far.
In 2018, he has had a mixed bag, depending on what you are looking for. His slash line in 2018 is .200/.281/.475. The first two numbers are not ones that are particularly great but the slugging percentage is great. Also, he is currently tied for the lead in the AL in home runs with 13. He’s on pace to hit 49 home runs and 102 RBI. Globe Life Park in Arlington is a hitter’s park but it’s nothing compared to Coors Field. If he were to play half of his games at Coors Field, he could easily hit 60+ homers.
However, he also strikes out in droves. If there is something more than droves, he would qualify in that category. He has played in 43 games and he has struck out 61 times. That puts him on pace for an alarming 230 times. If that pace continues, he would beat the old all-time single season record put forth by former Rockie Mark Reynolds with his 223 strikeouts in 2009, when he was with the Diamondbacks.
Looking at his contract, Gallo is only making a little over the league minimum in 2018 as he is making $560,000. He’s not even arbitration eligible until the 2019-2020 offseason and he’s not free agent eligible until the 2022-2023 offseason
So, the home runs and RBI are great (and have a potential to be even greater at Coors Field) but you would also have to take the bad with the low average and high strikeout rate.